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Finding the Fourth Proportional to 20,451.60, 30,677.40 and 10,593.90

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Solution

The fourth proportional to 20,451.60, 30,677.40 and 10,593.90 is: 15,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.60 : 30,677.40 = 10,593.90 : x
  2. Step 2: Convert to fraction form
    20,451.60/30,677.40 = 10,593.90/x
  3. Step 3: Cross multiply
    20,451.60x = 30,677.40 × 10,593.90
  4. Step 4: Simplify right side
    20,451.60x = 324,993,307.86
  5. Step 5: Solve for x
    x = 324,993,307.86/20,451.60
  6. Step 6: Final answer
    x = 15,890.85

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Double scale
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Similar ratio
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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.