Home / 20,646,520.20-30,993,399.90-12,131,654.40

Finding the Fourth Proportional to 20,646,520.20, 30,993,399.90 and 12,131,654.40

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Solution

The fourth proportional to 20,646,520.20, 30,993,399.90 and 12,131,654.40 is: 18,211,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646,520.20 : 30,993,399.90 = 12,131,654.40 : x
  2. Step 2: Convert to fraction form
    20,646,520.20/30,993,399.90 = 12,131,654.40/x
  3. Step 3: Cross multiply
    20,646,520.20x = 30,993,399.90 × 12,131,654.40
  4. Step 4: Simplify right side
    20,646,520.20x = 376,001,216,267,794.56
  5. Step 5: Solve for x
    x = 376,001,216,267,794.56/20,646,520.20
  6. Step 6: Final answer
    x = 18,211,360.20

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1.5x scale

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.