Practicing Success
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CUET
General Test
Numerical Ability
Ratios
The fourth proportional to 10, 12, 15 is :
24
22
18
20
Here,
10 : 12 : 15 : x
⇒ The fourth proportional x,
⇒ 10x = 12 x 15
⇒ 10x = 180
⇒ x = 18.