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Finding the Fourth Proportional to 15,753.72, 21,747.18 and 9,793.56

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Solution

The fourth proportional to 15,753.72, 21,747.18 and 9,793.56 is: 13,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753.72 : 21,747.18 = 9,793.56 : x
  2. Step 2: Convert to fraction form
    15,753.72/21,747.18 = 9,793.56/x
  3. Step 3: Cross multiply
    15,753.72x = 21,747.18 × 9,793.56
  4. Step 4: Simplify right side
    15,753.72x = 212,982,312.16
  5. Step 5: Solve for x
    x = 212,982,312.16/15,753.72
  6. Step 6: Final answer
    x = 13,519.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.