4 log 16For example, in the problem given, by rewriting 16 as a power of 4, we made it easier to solve the equation. Once the bases match, equate the exponents and solve it like a regular algebraHere is the answer to questions like: Log base 16 of 4 or what is the base 16 log of 4? Use our | Log16 calculator to find the logarithm of any positive number for any number base you enter.