Home / 20,972.26-31,456.68-6,180.94

Finding the Fourth Proportional to 20,972.26, 31,456.68 and 6,180.94

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Solution

The fourth proportional to 20,972.26, 31,456.68 and 6,180.94 is: 9,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.26 : 31,456.68 = 6,180.94 : x
  2. Step 2: Convert to fraction form
    20,972.26/31,456.68 = 6,180.94/x
  3. Step 3: Cross multiply
    20,972.26x = 31,456.68 × 6,180.94
  4. Step 4: Simplify right side
    20,972.26x = 194,431,851.68
  5. Step 5: Solve for x
    x = 194,431,851.68/20,972.26
  6. Step 6: Final answer
    x = 9,270.91

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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.