Home / 12,226.15-18,338.91-3,906.64

Finding the Fourth Proportional to 12,226.15, 18,338.91 and 3,906.64

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Solution

The fourth proportional to 12,226.15, 18,338.91 and 3,906.64 is: 5,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.15 : 18,338.91 = 3,906.64 : x
  2. Step 2: Convert to fraction form
    12,226.15/18,338.91 = 3,906.64/x
  3. Step 3: Cross multiply
    12,226.15x = 18,338.91 × 3,906.64
  4. Step 4: Simplify right side
    12,226.15x = 71,643,519.36
  5. Step 5: Solve for x
    x = 71,643,519.36/12,226.15
  6. Step 6: Final answer
    x = 5,859.86

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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.