Home / 11,986.25-17,976.94-3,221.24

Finding the Fourth Proportional to 11,986.25, 17,976.94 and 3,221.24

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Solution

The fourth proportional to 11,986.25, 17,976.94 and 3,221.24 is: 4,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.25 : 17,976.94 = 3,221.24 : x
  2. Step 2: Convert to fraction form
    11,986.25/17,976.94 = 3,221.24/x
  3. Step 3: Cross multiply
    11,986.25x = 17,976.94 × 3,221.24
  4. Step 4: Simplify right side
    11,986.25x = 57,907,940.27
  5. Step 5: Solve for x
    x = 57,907,940.27/11,986.25
  6. Step 6: Final answer
    x = 4,831.20

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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.