Home / 20,806,165.86-31,221,578.13-11,591,850.78

Finding the Fourth Proportional to 20,806,165.86, 31,221,578.13 and 11,591,850.78

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Solution

The fourth proportional to 20,806,165.86, 31,221,578.13 and 11,591,850.78 is: 17,394,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,165.86 : 31,221,578.13 = 11,591,850.78 : x
  2. Step 2: Convert to fraction form
    20,806,165.86/31,221,578.13 = 11,591,850.78/x
  3. Step 3: Cross multiply
    20,806,165.86x = 31,221,578.13 × 11,591,850.78
  4. Step 4: Simplify right side
    20,806,165.86x = 361,915,874,799,071.44
  5. Step 5: Solve for x
    x = 361,915,874,799,071.44/20,806,165.86
  6. Step 6: Final answer
    x = 17,394,645.28

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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.