Home / 22,187.80-33,272.18-8,143.21

Finding the Fourth Proportional to 22,187.80, 33,272.18 and 8,143.21

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Solution

The fourth proportional to 22,187.80, 33,272.18 and 8,143.21 is: 12,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.80 : 33,272.18 = 8,143.21 : x
  2. Step 2: Convert to fraction form
    22,187.80/33,272.18 = 8,143.21/x
  3. Step 3: Cross multiply
    22,187.80x = 33,272.18 × 8,143.21
  4. Step 4: Simplify right side
    22,187.80x = 270,942,348.90
  5. Step 5: Solve for x
    x = 270,942,348.90/22,187.80
  6. Step 6: Final answer
    x = 12,211.32

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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.