Home / 22,480.20-33,720.30-7,687.80

Finding the Fourth Proportional to 22,480.20, 33,720.30 and 7,687.80

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Solution

The fourth proportional to 22,480.20, 33,720.30 and 7,687.80 is: 11,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,480.20 : 33,720.30 = 7,687.80 : x
  2. Step 2: Convert to fraction form
    22,480.20/33,720.30 = 7,687.80/x
  3. Step 3: Cross multiply
    22,480.20x = 33,720.30 × 7,687.80
  4. Step 4: Simplify right side
    22,480.20x = 259,234,922.34
  5. Step 5: Solve for x
    x = 259,234,922.34/22,480.20
  6. Step 6: Final answer
    x = 11,531.70

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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.