Home / 20,418.66-30,629.76-5,627.61

Finding the Fourth Proportional to 20,418.66, 30,629.76 and 5,627.61

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Solution

The fourth proportional to 20,418.66, 30,629.76 and 5,627.61 is: 8,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.66 : 30,629.76 = 5,627.61 : x
  2. Step 2: Convert to fraction form
    20,418.66/30,629.76 = 5,627.61/x
  3. Step 3: Cross multiply
    20,418.66x = 30,629.76 × 5,627.61
  4. Step 4: Simplify right side
    20,418.66x = 172,372,343.67
  5. Step 5: Solve for x
    x = 172,372,343.67/20,418.66
  6. Step 6: Final answer
    x = 8,441.90

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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.