Home / 12,226.38-18,339.36-3,906.35

Finding the Fourth Proportional to 12,226.38, 18,339.36 and 3,906.35

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Solution

The fourth proportional to 12,226.38, 18,339.36 and 3,906.35 is: 5,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.38 : 18,339.36 = 3,906.35 : x
  2. Step 2: Convert to fraction form
    12,226.38/18,339.36 = 3,906.35/x
  3. Step 3: Cross multiply
    12,226.38x = 18,339.36 × 3,906.35
  4. Step 4: Simplify right side
    12,226.38x = 71,639,867.24
  5. Step 5: Solve for x
    x = 71,639,867.24/12,226.38
  6. Step 6: Final answer
    x = 5,859.45

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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.