Home / 39,631.82-54,691.92-21,726.45

Finding the Fourth Proportional to 39,631.82, 54,691.92 and 21,726.45

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Solution

The fourth proportional to 39,631.82, 54,691.92 and 21,726.45 is: 29,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,631.82 : 54,691.92 = 21,726.45 : x
  2. Step 2: Convert to fraction form
    39,631.82/54,691.92 = 21,726.45/x
  3. Step 3: Cross multiply
    39,631.82x = 54,691.92 × 21,726.45
  4. Step 4: Simplify right side
    39,631.82x = 1,188,261,265.28
  5. Step 5: Solve for x
    x = 1,188,261,265.28/39,631.82
  6. Step 6: Final answer
    x = 29,982.51

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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.