Home / 20,757,845.88-28,645,656.28-11,338,644.65

Finding the Fourth Proportional to 20,757,845.88, 28,645,656.28 and 11,338,644.65

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Solution

The fourth proportional to 20,757,845.88, 28,645,656.28 and 11,338,644.65 is: 15,647,236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757,845.88 : 28,645,656.28 = 11,338,644.65 : x
  2. Step 2: Convert to fraction form
    20,757,845.88/28,645,656.28 = 11,338,644.65/x
  3. Step 3: Cross multiply
    20,757,845.88x = 28,645,656.28 × 11,338,644.65
  4. Step 4: Simplify right side
    20,757,845.88x = 324,802,917,153,386
  5. Step 5: Solve for x
    x = 324,802,917,153,386/20,757,845.88
  6. Step 6: Final answer
    x = 15,647,236.18

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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.