Home / 11,942.76-16,481.12-6,638.16

Finding the Fourth Proportional to 11,942.76, 16,481.12 and 6,638.16

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Solution

The fourth proportional to 11,942.76, 16,481.12 and 6,638.16 is: 9,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,942.76 : 16,481.12 = 6,638.16 : x
  2. Step 2: Convert to fraction form
    11,942.76/16,481.12 = 6,638.16/x
  3. Step 3: Cross multiply
    11,942.76x = 16,481.12 × 6,638.16
  4. Step 4: Simplify right side
    11,942.76x = 109,404,311.54
  5. Step 5: Solve for x
    x = 109,404,311.54/11,942.76
  6. Step 6: Final answer
    x = 9,160.72

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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.