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Finding the Fourth Proportional to 20,452.20, 30,678.30 and 8,766.60

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Solution

The fourth proportional to 20,452.20, 30,678.30 and 8,766.60 is: 13,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.20 : 30,678.30 = 8,766.60 : x
  2. Step 2: Convert to fraction form
    20,452.20/30,678.30 = 8,766.60/x
  3. Step 3: Cross multiply
    20,452.20x = 30,678.30 × 8,766.60
  4. Step 4: Simplify right side
    20,452.20x = 268,944,384.78
  5. Step 5: Solve for x
    x = 268,944,384.78/20,452.20
  6. Step 6: Final answer
    x = 13,149.90

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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.