Home / 12,226.20-18,320.10-10,267.80

Finding the Fourth Proportional to 12,226.20, 18,320.10 and 10,267.80

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Solution

The fourth proportional to 12,226.20, 18,320.10 and 10,267.80 is: 15,385.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.20 : 18,320.10 = 10,267.80 : x
  2. Step 2: Convert to fraction form
    12,226.20/18,320.10 = 10,267.80/x
  3. Step 3: Cross multiply
    12,226.20x = 18,320.10 × 10,267.80
  4. Step 4: Simplify right side
    12,226.20x = 188,107,122.78
  5. Step 5: Solve for x
    x = 188,107,122.78/12,226.20
  6. Step 6: Final answer
    x = 15,385.58

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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.