Home / 20,414.75-30,619.33-5,621.54

Finding the Fourth Proportional to 20,414.75, 30,619.33 and 5,621.54

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Solution

The fourth proportional to 20,414.75, 30,619.33 and 5,621.54 is: 8,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.75 : 30,619.33 = 5,621.54 : x
  2. Step 2: Convert to fraction form
    20,414.75/30,619.33 = 5,621.54/x
  3. Step 3: Cross multiply
    20,414.75x = 30,619.33 × 5,621.54
  4. Step 4: Simplify right side
    20,414.75x = 172,127,621.22
  5. Step 5: Solve for x
    x = 172,127,621.22/20,414.75
  6. Step 6: Final answer
    x = 8,431.53

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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.