Home / 12,228.73-18,339.13-3,906.80

Finding the Fourth Proportional to 12,228.73, 18,339.13 and 3,906.80

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Solution

The fourth proportional to 12,228.73, 18,339.13 and 3,906.80 is: 5,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.73 : 18,339.13 = 3,906.80 : x
  2. Step 2: Convert to fraction form
    12,228.73/18,339.13 = 3,906.80/x
  3. Step 3: Cross multiply
    12,228.73x = 18,339.13 × 3,906.80
  4. Step 4: Simplify right side
    12,228.73x = 71,647,313.08
  5. Step 5: Solve for x
    x = 71,647,313.08/12,228.73
  6. Step 6: Final answer
    x = 5,858.93

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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.