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Finding the Fourth Proportional to 18,577.26, 27,873 and 11,187

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Solution

The fourth proportional to 18,577.26, 27,873 and 11,187 is: 16,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,577.26 : 27,873 = 11,187 : x
  2. Step 2: Convert to fraction form
    18,577.26/27,873 = 11,187/x
  3. Step 3: Cross multiply
    18,577.26x = 27,873 × 11,187
  4. Step 4: Simplify right side
    18,577.26x = 311,815,251
  5. Step 5: Solve for x
    x = 311,815,251/18,577.26
  6. Step 6: Final answer
    x = 16,784.78

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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.