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Finding the Fourth Proportional to 26,589.87, 39,881.72 and 6,866.88

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Solution

The fourth proportional to 26,589.87, 39,881.72 and 6,866.88 is: 10,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,589.87 : 39,881.72 = 6,866.88 : x
  2. Step 2: Convert to fraction form
    26,589.87/39,881.72 = 6,866.88/x
  3. Step 3: Cross multiply
    26,589.87x = 39,881.72 × 6,866.88
  4. Step 4: Simplify right side
    26,589.87x = 273,862,951.10
  5. Step 5: Solve for x
    x = 273,862,951.10/26,589.87
  6. Step 6: Final answer
    x = 10,299.52

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1.5x scale

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.