Question

6: 21 :: 3 : ? find the x​

Answer 1

Answer:

21/2

Step-by-step explanation:

let .. the unknown factor be x

6:21::3:x

i.e,

6/21=3/x

2/7=3/x

by cross multiplying

2x=21

x=21/2

Answer 2

Solution : -

Given : -

6: 21 :: 3 : ?

To Find : -

Find the x.

Step-by-step Explanation : -

Product of Extremes = Product of Means

Product of Extremes = 6 × x

Product of Means = 21 × 3

6 × x = 21 × 3

Now : -

x = 21 × 3/6

x = 21/2 or 10.5

So , the value of x is 21/2 or 10.5

• 6 : 21 :: 3 : 10.5