Home / 20,792,131.40-28,694,217.48-11,972,892.68

Finding the Fourth Proportional to 20,792,131.40, 28,694,217.48 and 11,972,892.68

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Solution

The fourth proportional to 20,792,131.40, 28,694,217.48 and 11,972,892.68 is: 16,523,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792,131.40 : 28,694,217.48 = 11,972,892.68 : x
  2. Step 2: Convert to fraction form
    20,792,131.40/28,694,217.48 = 11,972,892.68/x
  3. Step 3: Cross multiply
    20,792,131.40x = 28,694,217.48 × 11,972,892.68
  4. Step 4: Simplify right side
    20,792,131.40x = 343,552,786,424,620.06
  5. Step 5: Solve for x
    x = 343,552,786,424,620.06/20,792,131.40
  6. Step 6: Final answer
    x = 16,523,211.58

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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.