Home / 15,545.77-21,453.41-8,472.20

Finding the Fourth Proportional to 15,545.77, 21,453.41 and 8,472.20

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Solution

The fourth proportional to 15,545.77, 21,453.41 and 8,472.20 is: 11,691.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.77 : 21,453.41 = 8,472.20 : x
  2. Step 2: Convert to fraction form
    15,545.77/21,453.41 = 8,472.20/x
  3. Step 3: Cross multiply
    15,545.77x = 21,453.41 × 8,472.20
  4. Step 4: Simplify right side
    15,545.77x = 181,757,446.46
  5. Step 5: Solve for x
    x = 181,757,446.46/15,545.77
  6. Step 6: Final answer
    x = 11,691.76

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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.