What is x when 19 divided by x equals 51?

To find the answer, just divide the dividend by the quotient: 19 ÷ 51 = 0.37254901960784

To prove this, let's compute 19 divided by 0.37254901960784: $\frac{19}{0.37254901960784} = 51$

How does it work?

Asking what the value of x could be when 19 divided by x gives a result of 51, is equivalent to solving the following equation:

$\frac{19}{x} = 51$

Multiply both sides by x: $\frac{19 x}{x} = 51 x$
$\frac{19 x}{x}$ is equivalent to $\frac{x}{x} \times 19$ , which simplifies to $1 \times 19$ (or just $19$ ).
Thus, the equation becomes: $19 = 51 x$
To find x, divide both sides by 51: $\frac{19}{51} = \frac{51 x}{51}$
Which gives, after simplification: $0.37254901960784 = x$ (or $x = 0.37254901960784$ )

So, if the dividend is 19 and the quotient is 51, the divisor is 0.37254901960784.