South Africa beat Australia by 80 runs in the second ICC Under-19 World Cup semi-final to book a place in Saturday's final against Pakistan.
5th place play-off: India v West Indies
7th place play-off: Afghanistan v Sri Lanka
9th place play-off (Plate Final): Bangladesh v New Zealand
11th place play-off: United Arab Emirates v Zimbabwe
3rd place play-off: England v Australia
Final: Pakistan v South Africa
Australia were bowled out for 150 after Clyde Fortuin's half-century had guided South Africa to 230 for nine.
Elsewhere, Scotland clinched 13th place in the competition by beating Namibia by five runs and Canada beat Papua New Guinea by 11 runs to finish 15th.
Super League semi-final
Fortuin led the way for South Africa against Australia with 74 in 92 balls from the top of the order, sharing substantial partnerships with Aiden Markrem (45) and Kirwin Christoffels (20) before he was caught by Tom Andrews off Matt Short.
Yaseen Valli also made 31 to help South Africa finish on a competitive score but Australia's fightback would have had them concerned, given that they lost six wickets for 34 runs towards the end.
Short, Billy Stanlake and Ben Ashkenazi all took two wickets.
Australia were quickly in trouble during their reply as Kagiso Rabada, en route to career-best figures of six for 25, burst through the top order to leave the score at 33 for three.
Restorative batting from Jake Doran (36 in 74 balls) and Alex Gregory (31 in 56) helped keep the Australians in the game Corbin Bosch had removed both, there was no way back.
Rabada returned to take three more wickets and Australia were bowled out in 24.2 overs.
As South Africa prepare to take on Pakistan in Saturday's final, Australia take on England in the third/fourth place play-off on Friday.
13th place play-off
The positional play-offs proved to be much closer affairs and Scotland ended their tournament with a five-run win over Namibia to finish 13th.
Wicket-keeper Alex Baum top scored for Scotland with 36 as they posted 178 before being dismissed in the 39th over, Marius Delport, Kobus Brand, Bredell Wessels and Jano Coetzee all taking two wickets.
Scotland then kept themselves in the game by taking wickets at regular intervals as Namibia battled hard to chase down their target.
They just failed, however, thanks to Abdul Sabri and Nick Farrar taking three wickets apiece, the former taking the last three to fall including the last one, which broke a determined 10th-wicket stand of 28 between Wessells and Brand
15th place play-off
The battle for 15th place between Canada and PNG was also in the balance until the very end, when Canada won by 11 runs.
Only two players scored more than eight runs for Canada, but crucially, both Yug Rao (77 in 105 balls) and Stephan Joseph (58 in 86) made half-centuries, adding 120 together after joining each other at 40 for four.
Nosaina Pokana took four for 27 and Sakavai Gerai three for 25 as Canada were bowled out for 169.
PNG were then in much better positions than Canada had found themselves during their run chase before they faded.
Captain Dogodo Bai was left unbeaten on 39 in 102 balls as his side were bowled out for 158 in 48.2 overs.
Nik Dutta and Farhan Malik both took three wickets.
© Cricket World 2014