What is x when 84 divided by x equals 19?

To find the answer, just divide the dividend by the quotient: 84 ÷ 19 = 4.4210526315789

To prove this, let's compute 84 divided by 4.4210526315789: $\frac{84}{4.4210526315789} = 19$

How does it work?

Asking what the value of x could be when 84 divided by x gives a result of 19, is equivalent to solving the following equation:

$\frac{84}{x} = 19$

Multiply both sides by x: $\frac{84 x}{x} = 19 x$
$\frac{84 x}{x}$ is equivalent to $\frac{x}{x} \times 84$ , which simplifies to $1 \times 84$ (or just $84$ ).
Thus, the equation becomes: $84 = 19 x$
To find x, divide both sides by 19: $\frac{84}{19} = \frac{19 x}{19}$
Which gives, after simplification: $4.4210526315789 = x$ (or $x = 4.4210526315789$ )

So, if the dividend is 84 and the quotient is 19, the divisor is 4.4210526315789.