Home / 20,717.75-31,049.22-7,557.41

Finding the Fourth Proportional to 20,717.75, 31,049.22 and 7,557.41

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Solution

The fourth proportional to 20,717.75, 31,049.22 and 7,557.41 is: 11,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.75 : 31,049.22 = 7,557.41 : x
  2. Step 2: Convert to fraction form
    20,717.75/31,049.22 = 7,557.41/x
  3. Step 3: Cross multiply
    20,717.75x = 31,049.22 × 7,557.41
  4. Step 4: Simplify right side
    20,717.75x = 234,651,685.72
  5. Step 5: Solve for x
    x = 234,651,685.72/20,717.75
  6. Step 6: Final answer
    x = 11,326.12

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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.