Home / 12,229.89-18,351.66-11,289.48

Finding the Fourth Proportional to 12,229.89, 18,351.66 and 11,289.48

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Solution

The fourth proportional to 12,229.89, 18,351.66 and 11,289.48 is: 16,940.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.89 : 18,351.66 = 11,289.48 : x
  2. Step 2: Convert to fraction form
    12,229.89/18,351.66 = 11,289.48/x
  3. Step 3: Cross multiply
    12,229.89x = 18,351.66 × 11,289.48
  4. Step 4: Simplify right side
    12,229.89x = 207,180,672.05
  5. Step 5: Solve for x
    x = 207,180,672.05/12,229.89
  6. Step 6: Final answer
    x = 16,940.52

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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.