Home / 11,091.38-15,286.05-9,192.96

Finding the Fourth Proportional to 11,091.38, 15,286.05 and 9,192.96

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Solution

The fourth proportional to 11,091.38, 15,286.05 and 9,192.96 is: 12,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.38 : 15,286.05 = 9,192.96 : x
  2. Step 2: Convert to fraction form
    11,091.38/15,286.05 = 9,192.96/x
  3. Step 3: Cross multiply
    11,091.38x = 15,286.05 × 9,192.96
  4. Step 4: Simplify right side
    11,091.38x = 140,524,046.21
  5. Step 5: Solve for x
    x = 140,524,046.21/11,091.38
  6. Step 6: Final answer
    x = 12,669.67

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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.