Home / 15,425.43-21,287.10-8,351.85

Finding the Fourth Proportional to 15,425.43, 21,287.10 and 8,351.85

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Solution

The fourth proportional to 15,425.43, 21,287.10 and 8,351.85 is: 11,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.43 : 21,287.10 = 8,351.85 : x
  2. Step 2: Convert to fraction form
    15,425.43/21,287.10 = 8,351.85/x
  3. Step 3: Cross multiply
    15,425.43x = 21,287.10 × 8,351.85
  4. Step 4: Simplify right side
    15,425.43x = 177,786,624.38
  5. Step 5: Solve for x
    x = 177,786,624.38/15,425.43
  6. Step 6: Final answer
    x = 11,525.55

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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.