Home / 28,120.68-42,186.22-9,398.92

Finding the Fourth Proportional to 28,120.68, 42,186.22 and 9,398.92

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Solution

The fourth proportional to 28,120.68, 42,186.22 and 9,398.92 is: 14,100.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.68 : 42,186.22 = 9,398.92 : x
  2. Step 2: Convert to fraction form
    28,120.68/42,186.22 = 9,398.92/x
  3. Step 3: Cross multiply
    28,120.68x = 42,186.22 × 9,398.92
  4. Step 4: Simplify right side
    28,120.68x = 396,504,906.88
  5. Step 5: Solve for x
    x = 396,504,906.88/28,120.68
  6. Step 6: Final answer
    x = 14,100.12

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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.