The in-form Delhi lad remained unbeaten on 82 runs off 51 balls as the Indians survived a few early setbacks to overhaul a difficult target of 161 with five deliveries to spare.
Sunday’s match, the last in Group 2, was a virtual quarter-final as the winners qualified the semi-finals. India finished their group engagements with three wins in four matches. Australia will go home with two wins and an equal number of defeats.
New Zealand had earlier qualified for the semi-finals from Group 2, while England and West Indies have gone through to the last-four stage from Group 1.