Home / 12,882.75-17,778.20-7,293.75

Finding the Fourth Proportional to 12,882.75, 17,778.20 and 7,293.75

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Solution

The fourth proportional to 12,882.75, 17,778.20 and 7,293.75 is: 10,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.75 : 17,778.20 = 7,293.75 : x
  2. Step 2: Convert to fraction form
    12,882.75/17,778.20 = 7,293.75/x
  3. Step 3: Cross multiply
    12,882.75x = 17,778.20 × 7,293.75
  4. Step 4: Simplify right side
    12,882.75x = 129,669,723.46
  5. Step 5: Solve for x
    x = 129,669,723.46/12,882.75
  6. Step 6: Final answer
    x = 10,065.38

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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.