Home / 12,443.97-18,664.30-4,121.89

Finding the Fourth Proportional to 12,443.97, 18,664.30 and 4,121.89

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Solution

The fourth proportional to 12,443.97, 18,664.30 and 4,121.89 is: 6,182.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.97 : 18,664.30 = 4,121.89 : x
  2. Step 2: Convert to fraction form
    12,443.97/18,664.30 = 4,121.89/x
  3. Step 3: Cross multiply
    12,443.97x = 18,664.30 × 4,121.89
  4. Step 4: Simplify right side
    12,443.97x = 76,932,191.53
  5. Step 5: Solve for x
    x = 76,932,191.53/12,443.97
  6. Step 6: Final answer
    x = 6,182.29

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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.