48:x=12

I’m not sure of the exact form, but here are the likely interpretations:

1. If you mean 48/x = 12

• Solve: 48/x = 12
• Multiply both sides by x: 48 = 12x
• x = 48/12 = 4

2. If you mean a proportion like 48:x = 12:y

• You need the second term y (or the second ratio) to solve for x.

Could you confirm which form you intended? If it’s the first, the answer is x = 4.