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Finding the Fourth Proportional to 27,484.80, 41,203.20 and 18,691.20

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Solution

The fourth proportional to 27,484.80, 41,203.20 and 18,691.20 is: 28,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,484.80 : 41,203.20 = 18,691.20 : x
  2. Step 2: Convert to fraction form
    27,484.80/41,203.20 = 18,691.20/x
  3. Step 3: Cross multiply
    27,484.80x = 41,203.20 × 18,691.20
  4. Step 4: Simplify right side
    27,484.80x = 770,137,251.84
  5. Step 5: Solve for x
    x = 770,137,251.84/27,484.80
  6. Step 6: Final answer
    x = 28,020.48

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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.