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Finding the Fourth Proportional to 26,766.78, 40,141.92 and 18,499.92

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Solution

The fourth proportional to 26,766.78, 40,141.92 and 18,499.92 is: 27,744.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,766.78 : 40,141.92 = 18,499.92 : x
  2. Step 2: Convert to fraction form
    26,766.78/40,141.92 = 18,499.92/x
  3. Step 3: Cross multiply
    26,766.78x = 40,141.92 × 18,499.92
  4. Step 4: Simplify right side
    26,766.78x = 742,622,308.65
  5. Step 5: Solve for x
    x = 742,622,308.65/26,766.78
  6. Step 6: Final answer
    x = 27,744.18

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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.