Home / 20,131.60-30,200.10-8,442.04

Finding the Fourth Proportional to 20,131.60, 30,200.10 and 8,442.04

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Solution

The fourth proportional to 20,131.60, 30,200.10 and 8,442.04 is: 12,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.60 : 30,200.10 = 8,442.04 : x
  2. Step 2: Convert to fraction form
    20,131.60/30,200.10 = 8,442.04/x
  3. Step 3: Cross multiply
    20,131.60x = 30,200.10 × 8,442.04
  4. Step 4: Simplify right side
    20,131.60x = 254,950,452.20
  5. Step 5: Solve for x
    x = 254,950,452.20/20,131.60
  6. Step 6: Final answer
    x = 12,664.19

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1.5x scale

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.