Home / 20,839.41-31,262.67-7,691.85

Finding the Fourth Proportional to 20,839.41, 31,262.67 and 7,691.85

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Solution

The fourth proportional to 20,839.41, 31,262.67 and 7,691.85 is: 11,539.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.41 : 31,262.67 = 7,691.85 : x
  2. Step 2: Convert to fraction form
    20,839.41/31,262.67 = 7,691.85/x
  3. Step 3: Cross multiply
    20,839.41x = 31,262.67 × 7,691.85
  4. Step 4: Simplify right side
    20,839.41x = 240,467,768.24
  5. Step 5: Solve for x
    x = 240,467,768.24/20,839.41
  6. Step 6: Final answer
    x = 11,539.09

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1.5x scale

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.