Home / 22,217.20-33,340.20-12,857.20

Finding the Fourth Proportional to 22,217.20, 33,340.20 and 12,857.20

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Solution

The fourth proportional to 22,217.20, 33,340.20 and 12,857.20 is: 19,294.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,217.20 : 33,340.20 = 12,857.20 : x
  2. Step 2: Convert to fraction form
    22,217.20/33,340.20 = 12,857.20/x
  3. Step 3: Cross multiply
    22,217.20x = 33,340.20 × 12,857.20
  4. Step 4: Simplify right side
    22,217.20x = 428,661,619.44
  5. Step 5: Solve for x
    x = 428,661,619.44/22,217.20
  6. Step 6: Final answer
    x = 19,294.13

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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.