Home / 16,489.98-22,761.20-13,155.72

Finding the Fourth Proportional to 16,489.98, 22,761.20 and 13,155.72

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Solution

The fourth proportional to 16,489.98, 22,761.20 and 13,155.72 is: 18,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,489.98 : 22,761.20 = 13,155.72 : x
  2. Step 2: Convert to fraction form
    16,489.98/22,761.20 = 13,155.72/x
  3. Step 3: Cross multiply
    16,489.98x = 22,761.20 × 13,155.72
  4. Step 4: Simplify right side
    16,489.98x = 299,439,921.60
  5. Step 5: Solve for x
    x = 299,439,921.60/16,489.98
  6. Step 6: Final answer
    x = 18,158.90

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1.5x scale

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.