Home / 20,517,410.52-28,313,189.82-11,815,911

Finding the Fourth Proportional to 20,517,410.52, 28,313,189.82 and 11,815,911

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Solution

The fourth proportional to 20,517,410.52, 28,313,189.82 and 11,815,911 is: 16,305,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517,410.52 : 28,313,189.82 = 11,815,911 : x
  2. Step 2: Convert to fraction form
    20,517,410.52/28,313,189.82 = 11,815,911/x
  3. Step 3: Cross multiply
    20,517,410.52x = 28,313,189.82 × 11,815,911
  4. Step 4: Simplify right side
    20,517,410.52x = 334,546,131,039,226
  5. Step 5: Solve for x
    x = 334,546,131,039,226/20,517,410.52
  6. Step 6: Final answer
    x = 16,305,475.33

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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.