Home / 20,616,917.90-28,447,932.98-11,915,900.73

Finding the Fourth Proportional to 20,616,917.90, 28,447,932.98 and 11,915,900.73

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Solution

The fourth proportional to 20,616,917.90, 28,447,932.98 and 11,915,900.73 is: 16,441,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616,917.90 : 28,447,932.98 = 11,915,900.73 : x
  2. Step 2: Convert to fraction form
    20,616,917.90/28,447,932.98 = 11,915,900.73/x
  3. Step 3: Cross multiply
    20,616,917.90x = 28,447,932.98 × 11,915,900.73
  4. Step 4: Simplify right side
    20,616,917.90x = 338,982,745,303,793.62
  5. Step 5: Solve for x
    x = 338,982,745,303,793.62/20,616,917.90
  6. Step 6: Final answer
    x = 16,441,969.99

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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.