Home / 20,729.26-31,098.42-7,581.30

Finding the Fourth Proportional to 20,729.26, 31,098.42 and 7,581.30

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Solution

The fourth proportional to 20,729.26, 31,098.42 and 7,581.30 is: 11,373.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.26 : 31,098.42 = 7,581.30 : x
  2. Step 2: Convert to fraction form
    20,729.26/31,098.42 = 7,581.30/x
  3. Step 3: Cross multiply
    20,729.26x = 31,098.42 × 7,581.30
  4. Step 4: Simplify right side
    20,729.26x = 235,766,451.55
  5. Step 5: Solve for x
    x = 235,766,451.55/20,729.26
  6. Step 6: Final answer
    x = 11,373.61

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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.