Home / 12,232.20-16,855.38-10,115.40

Finding the Fourth Proportional to 12,232.20, 16,855.38 and 10,115.40

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Solution

The fourth proportional to 12,232.20, 16,855.38 and 10,115.40 is: 13,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,232.20 : 16,855.38 = 10,115.40 : x
  2. Step 2: Convert to fraction form
    12,232.20/16,855.38 = 10,115.40/x
  3. Step 3: Cross multiply
    12,232.20x = 16,855.38 × 10,115.40
  4. Step 4: Simplify right side
    12,232.20x = 170,498,910.85
  5. Step 5: Solve for x
    x = 170,498,910.85/12,232.20
  6. Step 6: Final answer
    x = 13,938.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.