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Finding the Fourth Proportional to 13,608.96, 20,418.96 and 9,223.92

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Solution

The fourth proportional to 13,608.96, 20,418.96 and 9,223.92 is: 13,839.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.96 : 20,418.96 = 9,223.92 : x
  2. Step 2: Convert to fraction form
    13,608.96/20,418.96 = 9,223.92/x
  3. Step 3: Cross multiply
    13,608.96x = 20,418.96 × 9,223.92
  4. Step 4: Simplify right side
    13,608.96x = 188,342,853.52
  5. Step 5: Solve for x
    x = 188,342,853.52/13,608.96
  6. Step 6: Final answer
    x = 13,839.62

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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.