Please note that in fertilizer terms 'balanced' is NOT the same as equal ratios. Balanced fertilizer has all the major nutrients in the correct ratios for plant growth - around 5-1-3 or any multiples thereof is how plants actually use nutrients. 10-10-10 and other equal formulations are made for misinformed consumers rather than the best for plants. Because plants cannot use the nutrients in those ratios much is just wasted.
Ficus are gross feeders so they do not care where or how they get their nutrients. I have also never met one that can read so they don't care what's on the packet either. All those things are to satisfy the growers, not the trees.