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Finding the Fourth Proportional to 17,164.80, 25,723.20 and 13,660.80

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Solution

The fourth proportional to 17,164.80, 25,723.20 and 13,660.80 is: 20,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,164.80 : 25,723.20 = 13,660.80 : x
  2. Step 2: Convert to fraction form
    17,164.80/25,723.20 = 13,660.80/x
  3. Step 3: Cross multiply
    17,164.80x = 25,723.20 × 13,660.80
  4. Step 4: Simplify right side
    17,164.80x = 351,399,490.56
  5. Step 5: Solve for x
    x = 351,399,490.56/17,164.80
  6. Step 6: Final answer
    x = 20,472.10

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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.