Home / 20,498,911.20-30,760,176.60-7,728,580.80

Finding the Fourth Proportional to 20,498,911.20, 30,760,176.60 and 7,728,580.80

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Solution

The fourth proportional to 20,498,911.20, 30,760,176.60 and 7,728,580.80 is: 11,597,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498,911.20 : 30,760,176.60 = 7,728,580.80 : x
  2. Step 2: Convert to fraction form
    20,498,911.20/30,760,176.60 = 7,728,580.80/x
  3. Step 3: Cross multiply
    20,498,911.20x = 30,760,176.60 × 7,728,580.80
  4. Step 4: Simplify right side
    20,498,911.20x = 237,732,510,275,369.28
  5. Step 5: Solve for x
    x = 237,732,510,275,369.28/20,498,911.20
  6. Step 6: Final answer
    x = 11,597,323.78

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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.