Home / 13,480.85-20,202.82-8,553.95

Finding the Fourth Proportional to 13,480.85, 20,202.82 and 8,553.95

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Solution

The fourth proportional to 13,480.85, 20,202.82 and 8,553.95 is: 12,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.85 : 20,202.82 = 8,553.95 : x
  2. Step 2: Convert to fraction form
    13,480.85/20,202.82 = 8,553.95/x
  3. Step 3: Cross multiply
    13,480.85x = 20,202.82 × 8,553.95
  4. Step 4: Simplify right side
    13,480.85x = 172,813,912.14
  5. Step 5: Solve for x
    x = 172,813,912.14/13,480.85
  6. Step 6: Final answer
    x = 12,819.21

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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.