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Finding the Fourth Proportional to 38,313.12, 52,871.76 and 21,545.76

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Solution

The fourth proportional to 38,313.12, 52,871.76 and 21,545.76 is: 29,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,313.12 : 52,871.76 = 21,545.76 : x
  2. Step 2: Convert to fraction form
    38,313.12/52,871.76 = 21,545.76/x
  3. Step 3: Cross multiply
    38,313.12x = 52,871.76 × 21,545.76
  4. Step 4: Simplify right side
    38,313.12x = 1,139,162,251.74
  5. Step 5: Solve for x
    x = 1,139,162,251.74/38,313.12
  6. Step 6: Final answer
    x = 29,732.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.