Home / 15,449.22-21,320.07-8,375.61

Finding the Fourth Proportional to 15,449.22, 21,320.07 and 8,375.61

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Solution

The fourth proportional to 15,449.22, 21,320.07 and 8,375.61 is: 11,558.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.22 : 21,320.07 = 8,375.61 : x
  2. Step 2: Convert to fraction form
    15,449.22/21,320.07 = 8,375.61/x
  3. Step 3: Cross multiply
    15,449.22x = 21,320.07 × 8,375.61
  4. Step 4: Simplify right side
    15,449.22x = 178,568,591.49
  5. Step 5: Solve for x
    x = 178,568,591.49/15,449.22
  6. Step 6: Final answer
    x = 11,558.42

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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.