Home / 20,397.72-30,598.20-8,711.04

Finding the Fourth Proportional to 20,397.72, 30,598.20 and 8,711.04

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Solution

The fourth proportional to 20,397.72, 30,598.20 and 8,711.04 is: 13,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.72 : 30,598.20 = 8,711.04 : x
  2. Step 2: Convert to fraction form
    20,397.72/30,598.20 = 8,711.04/x
  3. Step 3: Cross multiply
    20,397.72x = 30,598.20 × 8,711.04
  4. Step 4: Simplify right side
    20,397.72x = 266,542,144.13
  5. Step 5: Solve for x
    x = 266,542,144.13/20,397.72
  6. Step 6: Final answer
    x = 13,067.25

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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.