Home / 39,631.61-54,691.50-21,726.56

Finding the Fourth Proportional to 39,631.61, 54,691.50 and 21,726.56

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Solution

The fourth proportional to 39,631.61, 54,691.50 and 21,726.56 is: 29,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,631.61 : 54,691.50 = 21,726.56 : x
  2. Step 2: Convert to fraction form
    39,631.61/54,691.50 = 21,726.56/x
  3. Step 3: Cross multiply
    39,631.61x = 54,691.50 × 21,726.56
  4. Step 4: Simplify right side
    39,631.61x = 1,188,258,374.44
  5. Step 5: Solve for x
    x = 1,188,258,374.44/39,631.61
  6. Step 6: Final answer
    x = 29,982.59

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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.