Home / 13,481.80-20,201.10-8,542.60

Finding the Fourth Proportional to 13,481.80, 20,201.10 and 8,542.60

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Solution

The fourth proportional to 13,481.80, 20,201.10 and 8,542.60 is: 12,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.80 : 20,201.10 = 8,542.60 : x
  2. Step 2: Convert to fraction form
    13,481.80/20,201.10 = 8,542.60/x
  3. Step 3: Cross multiply
    13,481.80x = 20,201.10 × 8,542.60
  4. Step 4: Simplify right side
    13,481.80x = 172,569,916.86
  5. Step 5: Solve for x
    x = 172,569,916.86/13,481.80
  6. Step 6: Final answer
    x = 12,800.21

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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.