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Finding the Fourth Proportional to 20,008.92, 29,992.88 and 7,520.24

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Solution

The fourth proportional to 20,008.92, 29,992.88 and 7,520.24 is: 11,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.92 : 29,992.88 = 7,520.24 : x
  2. Step 2: Convert to fraction form
    20,008.92/29,992.88 = 7,520.24/x
  3. Step 3: Cross multiply
    20,008.92x = 29,992.88 × 7,520.24
  4. Step 4: Simplify right side
    20,008.92x = 225,553,749.67
  5. Step 5: Solve for x
    x = 225,553,749.67/20,008.92
  6. Step 6: Final answer
    x = 11,272.66

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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.