Home / 11,721-16,176.90-6,755.88

Finding the Fourth Proportional to 11,721, 16,176.90 and 6,755.88

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Solution

The fourth proportional to 11,721, 16,176.90 and 6,755.88 is: 9,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721 : 16,176.90 = 6,755.88 : x
  2. Step 2: Convert to fraction form
    11,721/16,176.90 = 6,755.88/x
  3. Step 3: Cross multiply
    11,721x = 16,176.90 × 6,755.88
  4. Step 4: Simplify right side
    11,721x = 109,289,195.17
  5. Step 5: Solve for x
    x = 109,289,195.17/11,721
  6. Step 6: Final answer
    x = 9,324.22

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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.