Home / 20,646,835.20-30,993,872.40-12,131,969.40

Finding the Fourth Proportional to 20,646,835.20, 30,993,872.40 and 12,131,969.40

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Solution

The fourth proportional to 20,646,835.20, 30,993,872.40 and 12,131,969.40 is: 18,211,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646,835.20 : 30,993,872.40 = 12,131,969.40 : x
  2. Step 2: Convert to fraction form
    20,646,835.20/30,993,872.40 = 12,131,969.40/x
  3. Step 3: Cross multiply
    20,646,835.20x = 30,993,872.40 × 12,131,969.40
  4. Step 4: Simplify right side
    20,646,835.20x = 376,016,711,544,304.56
  5. Step 5: Solve for x
    x = 376,016,711,544,304.56/20,646,835.20
  6. Step 6: Final answer
    x = 18,211,832.85

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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.