Home / 11,943.86-16,481.79-6,638.49

Finding the Fourth Proportional to 11,943.86, 16,481.79 and 6,638.49

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Solution

The fourth proportional to 11,943.86, 16,481.79 and 6,638.49 is: 9,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.86 : 16,481.79 = 6,638.49 : x
  2. Step 2: Convert to fraction form
    11,943.86/16,481.79 = 6,638.49/x
  3. Step 3: Cross multiply
    11,943.86x = 16,481.79 × 6,638.49
  4. Step 4: Simplify right side
    11,943.86x = 109,414,198.10
  5. Step 5: Solve for x
    x = 109,414,198.10/11,943.86
  6. Step 6: Final answer
    x = 9,160.71

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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.