Home / 21,098,122.20-31,647,183.30-20,247,816.60

Finding the Fourth Proportional to 21,098,122.20, 31,647,183.30 and 20,247,816.60

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Solution

The fourth proportional to 21,098,122.20, 31,647,183.30 and 20,247,816.60 is: 30,371,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098,122.20 : 31,647,183.30 = 20,247,816.60 : x
  2. Step 2: Convert to fraction form
    21,098,122.20/31,647,183.30 = 20,247,816.60/x
  3. Step 3: Cross multiply
    21,098,122.20x = 31,647,183.30 × 20,247,816.60
  4. Step 4: Simplify right side
    21,098,122.20x = 640,786,363,364,982.88
  5. Step 5: Solve for x
    x = 640,786,363,364,982.88/21,098,122.20
  6. Step 6: Final answer
    x = 30,371,724.90

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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.