Home / 21,542.34-29,731.19-12,112.72

Finding the Fourth Proportional to 21,542.34, 29,731.19 and 12,112.72

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Solution

The fourth proportional to 21,542.34, 29,731.19 and 12,112.72 is: 16,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.34 : 29,731.19 = 12,112.72 : x
  2. Step 2: Convert to fraction form
    21,542.34/29,731.19 = 12,112.72/x
  3. Step 3: Cross multiply
    21,542.34x = 29,731.19 × 12,112.72
  4. Step 4: Simplify right side
    21,542.34x = 360,125,610.02
  5. Step 5: Solve for x
    x = 360,125,610.02/21,542.34
  6. Step 6: Final answer
    x = 16,717.11

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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.