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Finding the Fourth Proportional to 12,418.50, 18,628.29 and 3,654.17

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Solution

The fourth proportional to 12,418.50, 18,628.29 and 3,654.17 is: 5,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.50 : 18,628.29 = 3,654.17 : x
  2. Step 2: Convert to fraction form
    12,418.50/18,628.29 = 3,654.17/x
  3. Step 3: Cross multiply
    12,418.50x = 18,628.29 × 3,654.17
  4. Step 4: Simplify right side
    12,418.50x = 68,070,845.33
  5. Step 5: Solve for x
    x = 68,070,845.33/12,418.50
  6. Step 6: Final answer
    x = 5,481.41

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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.