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Finding the Fourth Proportional to 18,441,865.20, 27,662,797.80 and 8,364,169.20

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Solution

The fourth proportional to 18,441,865.20, 27,662,797.80 and 8,364,169.20 is: 12,546,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441,865.20 : 27,662,797.80 = 8,364,169.20 : x
  2. Step 2: Convert to fraction form
    18,441,865.20/27,662,797.80 = 8,364,169.20/x
  3. Step 3: Cross multiply
    18,441,865.20x = 27,662,797.80 × 8,364,169.20
  4. Step 4: Simplify right side
    18,441,865.20x = 231,376,321,344,587.78
  5. Step 5: Solve for x
    x = 231,376,321,344,587.78/18,441,865.20
  6. Step 6: Final answer
    x = 12,546,253.80

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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.