Home / 13,620.33-20,391.51-9,229.98

Finding the Fourth Proportional to 13,620.33, 20,391.51 and 9,229.98

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Solution

The fourth proportional to 13,620.33, 20,391.51 and 9,229.98 is: 13,818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.33 : 20,391.51 = 9,229.98 : x
  2. Step 2: Convert to fraction form
    13,620.33/20,391.51 = 9,229.98/x
  3. Step 3: Cross multiply
    13,620.33x = 20,391.51 × 9,229.98
  4. Step 4: Simplify right side
    13,620.33x = 188,213,229.47
  5. Step 5: Solve for x
    x = 188,213,229.47/13,620.33
  6. Step 6: Final answer
    x = 13,818.55

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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.