Home / 20,972,043.20-28,940,833.82-11,679,610.73

Finding the Fourth Proportional to 20,972,043.20, 28,940,833.82 and 11,679,610.73

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Solution

The fourth proportional to 20,972,043.20, 28,940,833.82 and 11,679,610.73 is: 16,117,536.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,043.20 : 28,940,833.82 = 11,679,610.73 : x
  2. Step 2: Convert to fraction form
    20,972,043.20/28,940,833.82 = 11,679,610.73/x
  3. Step 3: Cross multiply
    20,972,043.20x = 28,940,833.82 × 11,679,610.73
  4. Step 4: Simplify right side
    20,972,043.20x = 338,017,673,117,667.75
  5. Step 5: Solve for x
    x = 338,017,673,117,667.75/20,972,043.20
  6. Step 6: Final answer
    x = 16,117,536.57

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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.