Question

3:5::x:20, find xtell​

Answer 1

Answer:

12

Step-by-step explanation:

3:5::x:20

As product of means is equal to the product of extremes.....

3×20 = 5x

=> 60 = 5x

Therefore, x = 60/5

= 12

Answer 2

The value of x is 12.

GIVEN

3:5::x:20

TO FIND

The value of x

SOLUTION

We can simply solve the above problem as follows;

We know that the equality of two ratios is defined as proportion.

The proportion sign(::) indicates that the two ratios are equivalent.

We know that,

$a:b :: c:d = \frac{a}{b} = \frac{c}{d}$

Where,

b & c are called the mean terms

a & d are called extreme terms.

which is given as,

Product means = Products of extremes

We are given,

3:5 :: x:20

Mean terms = 5 and x

Extreme terms = 3 and 20

Therefore,

$5 \times x = 3 \times 20$

$x = \frac{3 \times 20}{5}$

x = 12

Hence, The value of x is 12.

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