Home / 20,724,081.20-31,086,121.80-11,766,129.20

Finding the Fourth Proportional to 20,724,081.20, 31,086,121.80 and 11,766,129.20

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Solution

The fourth proportional to 20,724,081.20, 31,086,121.80 and 11,766,129.20 is: 17,649,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724,081.20 : 31,086,121.80 = 11,766,129.20 : x
  2. Step 2: Convert to fraction form
    20,724,081.20/31,086,121.80 = 11,766,129.20/x
  3. Step 3: Cross multiply
    20,724,081.20x = 31,086,121.80 × 11,766,129.20
  4. Step 4: Simplify right side
    20,724,081.20x = 365,763,325,425,736.56
  5. Step 5: Solve for x
    x = 365,763,325,425,736.56/20,724,081.20
  6. Step 6: Final answer
    x = 17,649,193.80

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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.