Home / 20,988.15-28,956.32-11,912.43

Finding the Fourth Proportional to 20,988.15, 28,956.32 and 11,912.43

Calculator

Solution

The fourth proportional to 20,988.15, 28,956.32 and 11,912.43 is: 16,435.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.15 : 28,956.32 = 11,912.43 : x
  2. Step 2: Convert to fraction form
    20,988.15/28,956.32 = 11,912.43/x
  3. Step 3: Cross multiply
    20,988.15x = 28,956.32 × 11,912.43
  4. Step 4: Simplify right side
    20,988.15x = 344,940,228.75
  5. Step 5: Solve for x
    x = 344,940,228.75/20,988.15
  6. Step 6: Final answer
    x = 16,435.00

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.