Home / 12,201.71-18,294.28-3,879.23

Finding the Fourth Proportional to 12,201.71, 18,294.28 and 3,879.23

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Solution

The fourth proportional to 12,201.71, 18,294.28 and 3,879.23 is: 5,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.71 : 18,294.28 = 3,879.23 : x
  2. Step 2: Convert to fraction form
    12,201.71/18,294.28 = 3,879.23/x
  3. Step 3: Cross multiply
    12,201.71x = 18,294.28 × 3,879.23
  4. Step 4: Simplify right side
    12,201.71x = 70,967,719.80
  5. Step 5: Solve for x
    x = 70,967,719.80/12,201.71
  6. Step 6: Final answer
    x = 5,816.21

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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.