Home / 20,080.68-30,121.23-8,231.43

Finding the Fourth Proportional to 20,080.68, 30,121.23 and 8,231.43

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Solution

The fourth proportional to 20,080.68, 30,121.23 and 8,231.43 is: 12,347.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.68 : 30,121.23 = 8,231.43 : x
  2. Step 2: Convert to fraction form
    20,080.68/30,121.23 = 8,231.43/x
  3. Step 3: Cross multiply
    20,080.68x = 30,121.23 × 8,231.43
  4. Step 4: Simplify right side
    20,080.68x = 247,940,796.26
  5. Step 5: Solve for x
    x = 247,940,796.26/20,080.68
  6. Step 6: Final answer
    x = 12,347.23

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1.5x scale

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.