Home / 12,545.17-18,819.38-3,780.97

Finding the Fourth Proportional to 12,545.17, 18,819.38 and 3,780.97

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Solution

The fourth proportional to 12,545.17, 18,819.38 and 3,780.97 is: 5,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.17 : 18,819.38 = 3,780.97 : x
  2. Step 2: Convert to fraction form
    12,545.17/18,819.38 = 3,780.97/x
  3. Step 3: Cross multiply
    12,545.17x = 18,819.38 × 3,780.97
  4. Step 4: Simplify right side
    12,545.17x = 71,155,511.20
  5. Step 5: Solve for x
    x = 71,155,511.20/12,545.17
  6. Step 6: Final answer
    x = 5,671.94

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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.