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Finding the Fourth Proportional to 38,867.70, 58,302.75 and 12,572.70

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Solution

The fourth proportional to 38,867.70, 58,302.75 and 12,572.70 is: 18,859.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,867.70 : 58,302.75 = 12,572.70 : x
  2. Step 2: Convert to fraction form
    38,867.70/58,302.75 = 12,572.70/x
  3. Step 3: Cross multiply
    38,867.70x = 58,302.75 × 12,572.70
  4. Step 4: Simplify right side
    38,867.70x = 733,022,984.93
  5. Step 5: Solve for x
    x = 733,022,984.93/38,867.70
  6. Step 6: Final answer
    x = 18,859.44

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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.