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Finding the Fourth Proportional to 18,469.16, 27,728.36 and 15,713.56

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Solution

The fourth proportional to 18,469.16, 27,728.36 and 15,713.56 is: 23,591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.16 : 27,728.36 = 15,713.56 : x
  2. Step 2: Convert to fraction form
    18,469.16/27,728.36 = 15,713.56/x
  3. Step 3: Cross multiply
    18,469.16x = 27,728.36 × 15,713.56
  4. Step 4: Simplify right side
    18,469.16x = 435,711,248.56
  5. Step 5: Solve for x
    x = 435,711,248.56/18,469.16
  6. Step 6: Final answer
    x = 23,591.29

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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.