Home / 11,937.86-16,481.70-7,691.03

Finding the Fourth Proportional to 11,937.86, 16,481.70 and 7,691.03

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Solution

The fourth proportional to 11,937.86, 16,481.70 and 7,691.03 is: 10,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,937.86 : 16,481.70 = 7,691.03 : x
  2. Step 2: Convert to fraction form
    11,937.86/16,481.70 = 7,691.03/x
  3. Step 3: Cross multiply
    11,937.86x = 16,481.70 × 7,691.03
  4. Step 4: Simplify right side
    11,937.86x = 126,761,166.74
  5. Step 5: Solve for x
    x = 126,761,166.74/11,937.86
  6. Step 6: Final answer
    x = 10,618.42

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1.5x scale

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.