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Finding the Fourth Proportional to 18,617.98, 27,929.02 and 5,471.38

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Solution

The fourth proportional to 18,617.98, 27,929.02 and 5,471.38 is: 8,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.98 : 27,929.02 = 5,471.38 : x
  2. Step 2: Convert to fraction form
    18,617.98/27,929.02 = 5,471.38/x
  3. Step 3: Cross multiply
    18,617.98x = 27,929.02 × 5,471.38
  4. Step 4: Simplify right side
    18,617.98x = 152,810,141.80
  5. Step 5: Solve for x
    x = 152,810,141.80/18,617.98
  6. Step 6: Final answer
    x = 8,207.66

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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.