Home / 21,542.31-32,301.30-8,379.61

Finding the Fourth Proportional to 21,542.31, 32,301.30 and 8,379.61

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Solution

The fourth proportional to 21,542.31, 32,301.30 and 8,379.61 is: 12,564.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.31 : 32,301.30 = 8,379.61 : x
  2. Step 2: Convert to fraction form
    21,542.31/32,301.30 = 8,379.61/x
  3. Step 3: Cross multiply
    21,542.31x = 32,301.30 × 8,379.61
  4. Step 4: Simplify right side
    21,542.31x = 270,672,296.49
  5. Step 5: Solve for x
    x = 270,672,296.49/21,542.31
  6. Step 6: Final answer
    x = 12,564.68

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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.