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Finding the Fourth Proportional to 20,001.54, 29,992.04 and 11,697.78

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Solution

The fourth proportional to 20,001.54, 29,992.04 and 11,697.78 is: 17,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.54 : 29,992.04 = 11,697.78 : x
  2. Step 2: Convert to fraction form
    20,001.54/29,992.04 = 11,697.78/x
  3. Step 3: Cross multiply
    20,001.54x = 29,992.04 × 11,697.78
  4. Step 4: Simplify right side
    20,001.54x = 350,840,227.18
  5. Step 5: Solve for x
    x = 350,840,227.18/20,001.54
  6. Step 6: Final answer
    x = 17,540.66

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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.