Home / 42,486.76-63,729.06-11,321.92

Finding the Fourth Proportional to 42,486.76, 63,729.06 and 11,321.92

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Solution

The fourth proportional to 42,486.76, 63,729.06 and 11,321.92 is: 16,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,486.76 : 63,729.06 = 11,321.92 : x
  2. Step 2: Convert to fraction form
    42,486.76/63,729.06 = 11,321.92/x
  3. Step 3: Cross multiply
    42,486.76x = 63,729.06 × 11,321.92
  4. Step 4: Simplify right side
    42,486.76x = 721,535,319.00
  5. Step 5: Solve for x
    x = 721,535,319.00/42,486.76
  6. Step 6: Final answer
    x = 16,982.59

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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.