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Finding the Fourth Proportional to 38,081.70, 52,553.79 and 21,314.70

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Solution

The fourth proportional to 38,081.70, 52,553.79 and 21,314.70 is: 29,414.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,081.70 : 52,553.79 = 21,314.70 : x
  2. Step 2: Convert to fraction form
    38,081.70/52,553.79 = 21,314.70/x
  3. Step 3: Cross multiply
    38,081.70x = 52,553.79 × 21,314.70
  4. Step 4: Simplify right side
    38,081.70x = 1,120,168,267.71
  5. Step 5: Solve for x
    x = 1,120,168,267.71/38,081.70
  6. Step 6: Final answer
    x = 29,414.87

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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.