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Finding the Fourth Proportional to 12,481,922.40, 18,701,888.40 and 10,676,335.20

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Solution

The fourth proportional to 12,481,922.40, 18,701,888.40 and 10,676,335.20 is: 15,996,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481,922.40 : 18,701,888.40 = 10,676,335.20 : x
  2. Step 2: Convert to fraction form
    12,481,922.40/18,701,888.40 = 10,676,335.20/x
  3. Step 3: Cross multiply
    12,481,922.40x = 18,701,888.40 × 10,676,335.20
  4. Step 4: Simplify right side
    12,481,922.40x = 199,667,629,431,391.66
  5. Step 5: Solve for x
    x = 199,667,629,431,391.66/12,481,922.40
  6. Step 6: Final answer
    x = 15,996,544.69

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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.