Home / 10,221.60-15,306.96-8,377.28

Finding the Fourth Proportional to 10,221.60, 15,306.96 and 8,377.28

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Solution

The fourth proportional to 10,221.60, 15,306.96 and 8,377.28 is: 12,545.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.60 : 15,306.96 = 8,377.28 : x
  2. Step 2: Convert to fraction form
    10,221.60/15,306.96 = 8,377.28/x
  3. Step 3: Cross multiply
    10,221.60x = 15,306.96 × 8,377.28
  4. Step 4: Simplify right side
    10,221.60x = 128,230,689.87
  5. Step 5: Solve for x
    x = 128,230,689.87/10,221.60
  6. Step 6: Final answer
    x = 12,545.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.