Home / 20,553.05-28,363.19-11,600.61

Finding the Fourth Proportional to 20,553.05, 28,363.19 and 11,600.61

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Solution

The fourth proportional to 20,553.05, 28,363.19 and 11,600.61 is: 16,008.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.05 : 28,363.19 = 11,600.61 : x
  2. Step 2: Convert to fraction form
    20,553.05/28,363.19 = 11,600.61/x
  3. Step 3: Cross multiply
    20,553.05x = 28,363.19 × 11,600.61
  4. Step 4: Simplify right side
    20,553.05x = 329,030,247.54
  5. Step 5: Solve for x
    x = 329,030,247.54/20,553.05
  6. Step 6: Final answer
    x = 16,008.83

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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.