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Finding the Fourth Proportional to 38,363.52, 57,545.28 and 21,936

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Solution

The fourth proportional to 38,363.52, 57,545.28 and 21,936 is: 32,904

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,363.52 : 57,545.28 = 21,936 : x
  2. Step 2: Convert to fraction form
    38,363.52/57,545.28 = 21,936/x
  3. Step 3: Cross multiply
    38,363.52x = 57,545.28 × 21,936
  4. Step 4: Simplify right side
    38,363.52x = 1,262,313,262.08
  5. Step 5: Solve for x
    x = 1,262,313,262.08/38,363.52
  6. Step 6: Final answer
    x = 32,904

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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.