Home / 10,422.25-15,629.45-3,400.61

Finding the Fourth Proportional to 10,422.25, 15,629.45 and 3,400.61

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Solution

The fourth proportional to 10,422.25, 15,629.45 and 3,400.61 is: 5,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,422.25 : 15,629.45 = 3,400.61 : x
  2. Step 2: Convert to fraction form
    10,422.25/15,629.45 = 3,400.61/x
  3. Step 3: Cross multiply
    10,422.25x = 15,629.45 × 3,400.61
  4. Step 4: Simplify right side
    10,422.25x = 53,149,568.81
  5. Step 5: Solve for x
    x = 53,149,568.81/10,422.25
  6. Step 6: Final answer
    x = 5,099.63

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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.