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Finding the Fourth Proportional to 27,519.98, 37,993.32 and 18,115.88

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Solution

The fourth proportional to 27,519.98, 37,993.32 and 18,115.88 is: 25,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,519.98 : 37,993.32 = 18,115.88 : x
  2. Step 2: Convert to fraction form
    27,519.98/37,993.32 = 18,115.88/x
  3. Step 3: Cross multiply
    27,519.98x = 37,993.32 × 18,115.88
  4. Step 4: Simplify right side
    27,519.98x = 688,282,266.38
  5. Step 5: Solve for x
    x = 688,282,266.38/27,519.98
  6. Step 6: Final answer
    x = 25,010.28

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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.