Home / 12,617.25-18,928.86-3,851.61

Finding the Fourth Proportional to 12,617.25, 18,928.86 and 3,851.61

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Solution

The fourth proportional to 12,617.25, 18,928.86 and 3,851.61 is: 5,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.25 : 18,928.86 = 3,851.61 : x
  2. Step 2: Convert to fraction form
    12,617.25/18,928.86 = 3,851.61/x
  3. Step 3: Cross multiply
    12,617.25x = 18,928.86 × 3,851.61
  4. Step 4: Simplify right side
    12,617.25x = 72,906,586.46
  5. Step 5: Solve for x
    x = 72,906,586.46/12,617.25
  6. Step 6: Final answer
    x = 5,778.33

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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.