Home / 20,731.88-31,108.96-9,044.39

Finding the Fourth Proportional to 20,731.88, 31,108.96 and 9,044.39

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Solution

The fourth proportional to 20,731.88, 31,108.96 and 9,044.39 is: 13,571.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.88 : 31,108.96 = 9,044.39 : x
  2. Step 2: Convert to fraction form
    20,731.88/31,108.96 = 9,044.39/x
  3. Step 3: Cross multiply
    20,731.88x = 31,108.96 × 9,044.39
  4. Step 4: Simplify right side
    20,731.88x = 281,361,566.73
  5. Step 5: Solve for x
    x = 281,361,566.73/20,731.88
  6. Step 6: Final answer
    x = 13,571.44

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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.