Home / 10,255.41-15,380.55-2,859.57

Finding the Fourth Proportional to 10,255.41, 15,380.55 and 2,859.57

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Solution

The fourth proportional to 10,255.41, 15,380.55 and 2,859.57 is: 4,288.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.41 : 15,380.55 = 2,859.57 : x
  2. Step 2: Convert to fraction form
    10,255.41/15,380.55 = 2,859.57/x
  3. Step 3: Cross multiply
    10,255.41x = 15,380.55 × 2,859.57
  4. Step 4: Simplify right side
    10,255.41x = 43,981,759.36
  5. Step 5: Solve for x
    x = 43,981,759.36/10,255.41
  6. Step 6: Final answer
    x = 4,288.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.