Home / 13,728,960-18,878,780.16-11,914,974.72

Finding the Fourth Proportional to 13,728,960, 18,878,780.16 and 11,914,974.72

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Solution

The fourth proportional to 13,728,960, 18,878,780.16 and 11,914,974.72 is: 16,384,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728,960 : 18,878,780.16 = 11,914,974.72 : x
  2. Step 2: Convert to fraction form
    13,728,960/18,878,780.16 = 11,914,974.72/x
  3. Step 3: Cross multiply
    13,728,960x = 18,878,780.16 × 11,914,974.72
  4. Step 4: Simplify right side
    13,728,960x = 224,940,188,350,837.56
  5. Step 5: Solve for x
    x = 224,940,188,350,837.56/13,728,960
  6. Step 6: Final answer
    x = 16,384,357.47

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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.