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Finding the Fourth Proportional to 12,393.20, 18,604.20 and 6,546.80

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Solution

The fourth proportional to 12,393.20, 18,604.20 and 6,546.80 is: 9,827.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.20 : 18,604.20 = 6,546.80 : x
  2. Step 2: Convert to fraction form
    12,393.20/18,604.20 = 6,546.80/x
  3. Step 3: Cross multiply
    12,393.20x = 18,604.20 × 6,546.80
  4. Step 4: Simplify right side
    12,393.20x = 121,797,976.56
  5. Step 5: Solve for x
    x = 121,797,976.56/12,393.20
  6. Step 6: Final answer
    x = 9,827.81

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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.