Home / 20,491,893.14-28,278,840.08-11,789,891.21

Finding the Fourth Proportional to 20,491,893.14, 28,278,840.08 and 11,789,891.21

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Solution

The fourth proportional to 20,491,893.14, 28,278,840.08 and 11,789,891.21 is: 16,270,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491,893.14 : 28,278,840.08 = 11,789,891.21 : x
  2. Step 2: Convert to fraction form
    20,491,893.14/28,278,840.08 = 11,789,891.21/x
  3. Step 3: Cross multiply
    20,491,893.14x = 28,278,840.08 × 11,789,891.21
  4. Step 4: Simplify right side
    20,491,893.14x = 333,404,448,188,359.50
  5. Step 5: Solve for x
    x = 333,404,448,188,359.50/20,491,893.14
  6. Step 6: Final answer
    x = 16,270,065.73

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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.