Home / 20,490,565.20-30,747,657.60-7,720,234.80

Finding the Fourth Proportional to 20,490,565.20, 30,747,657.60 and 7,720,234.80

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Solution

The fourth proportional to 20,490,565.20, 30,747,657.60 and 7,720,234.80 is: 11,584,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490,565.20 : 30,747,657.60 = 7,720,234.80 : x
  2. Step 2: Convert to fraction form
    20,490,565.20/30,747,657.60 = 7,720,234.80/x
  3. Step 3: Cross multiply
    20,490,565.20x = 30,747,657.60 × 7,720,234.80
  4. Step 4: Simplify right side
    20,490,565.20x = 237,379,136,222,004.50
  5. Step 5: Solve for x
    x = 237,379,136,222,004.50/20,490,565.20
  6. Step 6: Final answer
    x = 11,584,801.78

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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.