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Finding the Fourth Proportional to 20,375.56, 30,565.50 and 7,229.08

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Solution

The fourth proportional to 20,375.56, 30,565.50 and 7,229.08 is: 10,844.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.56 : 30,565.50 = 7,229.08 : x
  2. Step 2: Convert to fraction form
    20,375.56/30,565.50 = 7,229.08/x
  3. Step 3: Cross multiply
    20,375.56x = 30,565.50 × 7,229.08
  4. Step 4: Simplify right side
    20,375.56x = 220,960,444.74
  5. Step 5: Solve for x
    x = 220,960,444.74/20,375.56
  6. Step 6: Final answer
    x = 10,844.39

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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.