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Finding the Fourth Proportional to 12,799,692.80, 19,149,772.80 and 8,320,716.80

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Solution

The fourth proportional to 12,799,692.80, 19,149,772.80 and 8,320,716.80 is: 12,448,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799,692.80 : 19,149,772.80 = 8,320,716.80 : x
  2. Step 2: Convert to fraction form
    12,799,692.80/19,149,772.80 = 8,320,716.80/x
  3. Step 3: Cross multiply
    12,799,692.80x = 19,149,772.80 × 8,320,716.80
  4. Step 4: Simplify right side
    12,799,692.80x = 159,339,836,253,143.03
  5. Step 5: Solve for x
    x = 159,339,836,253,143.03/12,799,692.80
  6. Step 6: Final answer
    x = 12,448,723.48

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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.