Home / 13,714.78-18,912.24-11,731.90

Finding the Fourth Proportional to 13,714.78, 18,912.24 and 11,731.90

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Solution

The fourth proportional to 13,714.78, 18,912.24 and 11,731.90 is: 16,177.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.78 : 18,912.24 = 11,731.90 : x
  2. Step 2: Convert to fraction form
    13,714.78/18,912.24 = 11,731.90/x
  3. Step 3: Cross multiply
    13,714.78x = 18,912.24 × 11,731.90
  4. Step 4: Simplify right side
    13,714.78x = 221,876,508.46
  5. Step 5: Solve for x
    x = 221,876,508.46/13,714.78
  6. Step 6: Final answer
    x = 16,177.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.