Find the fourth proportion of the numbers rd of 15, th of 25, th of 35.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 60.
(1/3)rd of 15 = 5
(4/5)th of 25 = 20
(3/7)th of 35 = 15
Fourth proportion of 5, 20, and 15 = (20 × 15)/5 = 60
Therefore, the required number is 60.