Home / 12,882.20-17,781.66-7,576.76

Finding the Fourth Proportional to 12,882.20, 17,781.66 and 7,576.76

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Solution

The fourth proportional to 12,882.20, 17,781.66 and 7,576.76 is: 10,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.20 : 17,781.66 = 7,576.76 : x
  2. Step 2: Convert to fraction form
    12,882.20/17,781.66 = 7,576.76/x
  3. Step 3: Cross multiply
    12,882.20x = 17,781.66 × 7,576.76
  4. Step 4: Simplify right side
    12,882.20x = 134,727,370.22
  5. Step 5: Solve for x
    x = 134,727,370.22/12,882.20
  6. Step 6: Final answer
    x = 10,458.41

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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.