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Finding the Fourth Proportional to 26,660.18, 39,986.17 and 8,891.15

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Solution

The fourth proportional to 26,660.18, 39,986.17 and 8,891.15 is: 13,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,660.18 : 39,986.17 = 8,891.15 : x
  2. Step 2: Convert to fraction form
    26,660.18/39,986.17 = 8,891.15/x
  3. Step 3: Cross multiply
    26,660.18x = 39,986.17 × 8,891.15
  4. Step 4: Simplify right side
    26,660.18x = 355,522,791.01
  5. Step 5: Solve for x
    x = 355,522,791.01/26,660.18
  6. Step 6: Final answer
    x = 13,335.35

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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.