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Finding the Fourth Proportional to 27,388.80, 41,083.20 and 17,020.80

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Solution

The fourth proportional to 27,388.80, 41,083.20 and 17,020.80 is: 25,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,388.80 : 41,083.20 = 17,020.80 : x
  2. Step 2: Convert to fraction form
    27,388.80/41,083.20 = 17,020.80/x
  3. Step 3: Cross multiply
    27,388.80x = 41,083.20 × 17,020.80
  4. Step 4: Simplify right side
    27,388.80x = 699,268,930.56
  5. Step 5: Solve for x
    x = 699,268,930.56/27,388.80
  6. Step 6: Final answer
    x = 25,531.20

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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.