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Finding the Fourth Proportional to 17,891.28, 26,796.05 and 8,537.87

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Solution

The fourth proportional to 17,891.28, 26,796.05 and 8,537.87 is: 12,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,891.28 : 26,796.05 = 8,537.87 : x
  2. Step 2: Convert to fraction form
    17,891.28/26,796.05 = 8,537.87/x
  3. Step 3: Cross multiply
    17,891.28x = 26,796.05 × 8,537.87
  4. Step 4: Simplify right side
    17,891.28x = 228,781,147.25
  5. Step 5: Solve for x
    x = 228,781,147.25/17,891.28
  6. Step 6: Final answer
    x = 12,787.30

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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.