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Finding the Fourth Proportional to 27,110.10, 40,665.15 and 18,815.70

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Solution

The fourth proportional to 27,110.10, 40,665.15 and 18,815.70 is: 28,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,110.10 : 40,665.15 = 18,815.70 : x
  2. Step 2: Convert to fraction form
    27,110.10/40,665.15 = 18,815.70/x
  3. Step 3: Cross multiply
    27,110.10x = 40,665.15 × 18,815.70
  4. Step 4: Simplify right side
    27,110.10x = 765,143,262.86
  5. Step 5: Solve for x
    x = 765,143,262.86/27,110.10
  6. Step 6: Final answer
    x = 28,223.55

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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.