Home / 20,937,759.20-31,383,310.80-8,154,015.20

Finding the Fourth Proportional to 20,937,759.20, 31,383,310.80 and 8,154,015.20

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Solution

The fourth proportional to 20,937,759.20, 31,383,310.80 and 8,154,015.20 is: 12,221,937.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937,759.20 : 31,383,310.80 = 8,154,015.20 : x
  2. Step 2: Convert to fraction form
    20,937,759.20/31,383,310.80 = 8,154,015.20/x
  3. Step 3: Cross multiply
    20,937,759.20x = 31,383,310.80 × 8,154,015.20
  4. Step 4: Simplify right side
    20,937,759.20x = 255,899,993,289,524.19
  5. Step 5: Solve for x
    x = 255,899,993,289,524.19/20,937,759.20
  6. Step 6: Final answer
    x = 12,221,937.93

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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.