Home / 8,939.43-13,399.11-4,255.61

Finding the Fourth Proportional to 8,939.43, 13,399.11 and 4,255.61

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Solution

The fourth proportional to 8,939.43, 13,399.11 and 4,255.61 is: 6,378.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.43 : 13,399.11 = 4,255.61 : x
  2. Step 2: Convert to fraction form
    8,939.43/13,399.11 = 4,255.61/x
  3. Step 3: Cross multiply
    8,939.43x = 13,399.11 × 4,255.61
  4. Step 4: Simplify right side
    8,939.43x = 57,021,319.51
  5. Step 5: Solve for x
    x = 57,021,319.51/8,939.43
  6. Step 6: Final answer
    x = 6,378.63

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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.