Home / 20,654.28-30,960.10-8,169.24

Finding the Fourth Proportional to 20,654.28, 30,960.10 and 8,169.24

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Solution

The fourth proportional to 20,654.28, 30,960.10 and 8,169.24 is: 12,245.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.28 : 30,960.10 = 8,169.24 : x
  2. Step 2: Convert to fraction form
    20,654.28/30,960.10 = 8,169.24/x
  3. Step 3: Cross multiply
    20,654.28x = 30,960.10 × 8,169.24
  4. Step 4: Simplify right side
    20,654.28x = 252,920,487.32
  5. Step 5: Solve for x
    x = 252,920,487.32/20,654.28
  6. Step 6: Final answer
    x = 12,245.43

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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.