Home / 13,471,290.70-20,206,936.05-7,788,589.90

Finding the Fourth Proportional to 13,471,290.70, 20,206,936.05 and 7,788,589.90

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Solution

The fourth proportional to 13,471,290.70, 20,206,936.05 and 7,788,589.90 is: 11,682,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471,290.70 : 20,206,936.05 = 7,788,589.90 : x
  2. Step 2: Convert to fraction form
    13,471,290.70/20,206,936.05 = 7,788,589.90/x
  3. Step 3: Cross multiply
    13,471,290.70x = 20,206,936.05 × 7,788,589.90
  4. Step 4: Simplify right side
    13,471,290.70x = 157,383,538,028,975.91
  5. Step 5: Solve for x
    x = 157,383,538,028,975.91/13,471,290.70
  6. Step 6: Final answer
    x = 11,682,884.85

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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.