Home / 15,425.37-21,286.94-8,351.78

Finding the Fourth Proportional to 15,425.37, 21,286.94 and 8,351.78

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Solution

The fourth proportional to 15,425.37, 21,286.94 and 8,351.78 is: 11,525.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.37 : 21,286.94 = 8,351.78 : x
  2. Step 2: Convert to fraction form
    15,425.37/21,286.94 = 8,351.78/x
  3. Step 3: Cross multiply
    15,425.37x = 21,286.94 × 8,351.78
  4. Step 4: Simplify right side
    15,425.37x = 177,783,691.56
  5. Step 5: Solve for x
    x = 177,783,691.56/15,425.37
  6. Step 6: Final answer
    x = 11,525.41

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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.