Home / 18,668,675-28,007,736.42-5,205,503

Finding the Fourth Proportional to 18,668,675, 28,007,736.42 and 5,205,503

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Solution

The fourth proportional to 18,668,675, 28,007,736.42 and 5,205,503 is: 7,809,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668,675 : 28,007,736.42 = 5,205,503 : x
  2. Step 2: Convert to fraction form
    18,668,675/28,007,736.42 = 5,205,503/x
  3. Step 3: Cross multiply
    18,668,675x = 28,007,736.42 × 5,205,503
  4. Step 4: Simplify right side
    18,668,675x = 145,794,355,957,519.28
  5. Step 5: Solve for x
    x = 145,794,355,957,519.28/18,668,675
  6. Step 6: Final answer
    x = 7,809,571.70

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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.