Home / 21,115,082.80-31,659,793.80-8,320,841.20

Finding the Fourth Proportional to 21,115,082.80, 31,659,793.80 and 8,320,841.20

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Solution

The fourth proportional to 21,115,082.80, 31,659,793.80 and 8,320,841.20 is: 12,476,205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,082.80 : 31,659,793.80 = 8,320,841.20 : x
  2. Step 2: Convert to fraction form
    21,115,082.80/31,659,793.80 = 8,320,841.20/x
  3. Step 3: Cross multiply
    21,115,082.80x = 31,659,793.80 × 8,320,841.20
  4. Step 4: Simplify right side
    21,115,082.80x = 263,436,116,634,544.56
  5. Step 5: Solve for x
    x = 263,436,116,634,544.56/21,115,082.80
  6. Step 6: Final answer
    x = 12,476,205.71

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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.