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Finding the Fourth Proportional to 20,000.60, 30,015.72 and 7,532.88

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Solution

The fourth proportional to 20,000.60, 30,015.72 and 7,532.88 is: 11,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.60 : 30,015.72 = 7,532.88 : x
  2. Step 2: Convert to fraction form
    20,000.60/30,015.72 = 7,532.88/x
  3. Step 3: Cross multiply
    20,000.60x = 30,015.72 × 7,532.88
  4. Step 4: Simplify right side
    20,000.60x = 226,104,816.87
  5. Step 5: Solve for x
    x = 226,104,816.87/20,000.60
  6. Step 6: Final answer
    x = 11,304.90

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Half scale
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Similar ratio
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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.