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Finding the Fourth Proportional to 18,469,694.50, 25,481,964.48 and 11,951,570.64

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Solution

The fourth proportional to 18,469,694.50, 25,481,964.48 and 11,951,570.64 is: 16,489,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469,694.50 : 25,481,964.48 = 11,951,570.64 : x
  2. Step 2: Convert to fraction form
    18,469,694.50/25,481,964.48 = 11,951,570.64/x
  3. Step 3: Cross multiply
    18,469,694.50x = 25,481,964.48 × 11,951,570.64
  4. Step 4: Simplify right side
    18,469,694.50x = 304,549,498,528,690.88
  5. Step 5: Solve for x
    x = 304,549,498,528,690.88/18,469,694.50
  6. Step 6: Final answer
    x = 16,489,146.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.