Home / 12,419.76-18,629.61-3,654.66

Finding the Fourth Proportional to 12,419.76, 18,629.61 and 3,654.66

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Solution

The fourth proportional to 12,419.76, 18,629.61 and 3,654.66 is: 5,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.76 : 18,629.61 = 3,654.66 : x
  2. Step 2: Convert to fraction form
    12,419.76/18,629.61 = 3,654.66/x
  3. Step 3: Cross multiply
    12,419.76x = 18,629.61 × 3,654.66
  4. Step 4: Simplify right side
    12,419.76x = 68,084,890.48
  5. Step 5: Solve for x
    x = 68,084,890.48/12,419.76
  6. Step 6: Final answer
    x = 5,481.98

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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.