Home / 39,607.20-54,657.86-21,702.78

Finding the Fourth Proportional to 39,607.20, 54,657.86 and 21,702.78

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Solution

The fourth proportional to 39,607.20, 54,657.86 and 21,702.78 is: 29,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,607.20 : 54,657.86 = 21,702.78 : x
  2. Step 2: Convert to fraction form
    39,607.20/54,657.86 = 21,702.78/x
  3. Step 3: Cross multiply
    39,607.20x = 54,657.86 × 21,702.78
  4. Step 4: Simplify right side
    39,607.20x = 1,186,227,402.34
  5. Step 5: Solve for x
    x = 1,186,227,402.34/39,607.20
  6. Step 6: Final answer
    x = 29,949.79

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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.