Question

find the value of x in the following
x:9::28:12
pls help me asap​

Answer 1

Step-by-step explanation:

Given :-

X:9::28:12

To find :-

Find the value of X ?

Solution:-

Given that :

X:9::28:12

Means = 9 and 28

Product of means = 9×28 = 252

Extremes = X and 12

Product of extremes = X×12 = 12X

Since they are in the proportion

We know that

The product of means = The product of extremes

=> 252 = 12X

=> 12X = 252

=> X = 252/12

=>X = 21

Therefore, X = 21

Answer:-

The value of X for the given problem is 21

Check:-

If X = 21 then 21:9::28:12

Product of means = 9×28 = 252

Product of extremes = 21×12 = 252

Product of means= Product of extremes

Verified the given relations in the given problem.

Used formulae:-

• In Proportion,Product of means= Product of extremes

Points to know:-

• Equality of ratios is called Proportion.
• The symbol for Proportion is ::
• It is read as "Is as "
• If a,b,c,d are in proportion then a:b::c:d => bc = ad

Answer 2

Answer:

=>The value of $x= 21$

Step-by-step explanation:

Given that:-

$x:9::28:12$

To find:- The value of $x$,

The given ratio is written as:

=> $\frac{x}{9} =\frac{28}{12}$

By using cross multiplication,

So we get:

=> $x\times 12=28\times 9$

By simplifying it further, we get

=> $12x=252$

Divide both sides by $12$, we get

=> $\frac{12x}{12}=\frac{252}{12}$

=> $x= 21$

Hence, the required solution is 21.