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Finding the Fourth Proportional to 27,999.90, 41,902.65 and 19,251.90

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Solution

The fourth proportional to 27,999.90, 41,902.65 and 19,251.90 is: 28,811.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.90 : 41,902.65 = 19,251.90 : x
  2. Step 2: Convert to fraction form
    27,999.90/41,902.65 = 19,251.90/x
  3. Step 3: Cross multiply
    27,999.90x = 41,902.65 × 19,251.90
  4. Step 4: Simplify right side
    27,999.90x = 806,705,627.54
  5. Step 5: Solve for x
    x = 806,705,627.54/27,999.90
  6. Step 6: Final answer
    x = 28,811.02

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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.