Q311
The fourth proportional to 10, 12, 15 is:
A.
24
B.
22
C.
18
AnswerD.
20
Answer: Option C
Solution
Answer: Option C
Solution:
10 : 12 :: 15 : a12 × 15 = 10 × a
a = 18
Aptitude · Q311
Ratio
Competitive Exams · Aptitude · question 311
12 × 15 = 10 × a
a = 18