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Finding the Fourth Proportional to 39,469.73, 54,469.01 and 21,565.84

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Solution

The fourth proportional to 39,469.73, 54,469.01 and 21,565.84 is: 29,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,469.73 : 54,469.01 = 21,565.84 : x
  2. Step 2: Convert to fraction form
    39,469.73/54,469.01 = 21,565.84/x
  3. Step 3: Cross multiply
    39,469.73x = 54,469.01 × 21,565.84
  4. Step 4: Simplify right side
    39,469.73x = 1,174,669,914.88
  5. Step 5: Solve for x
    x = 1,174,669,914.88/39,469.73
  6. Step 6: Final answer
    x = 29,761.29

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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.