Home / 20,131,245.10-30,188,994.45-7,345,168.30

Finding the Fourth Proportional to 20,131,245.10, 30,188,994.45 and 7,345,168.30

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Solution

The fourth proportional to 20,131,245.10, 30,188,994.45 and 7,345,168.30 is: 11,014,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,245.10 : 30,188,994.45 = 7,345,168.30 : x
  2. Step 2: Convert to fraction form
    20,131,245.10/30,188,994.45 = 7,345,168.30/x
  3. Step 3: Cross multiply
    20,131,245.10x = 30,188,994.45 × 7,345,168.30
  4. Step 4: Simplify right side
    20,131,245.10x = 221,743,245,043,015.94
  5. Step 5: Solve for x
    x = 221,743,245,043,015.94/20,131,245.10
  6. Step 6: Final answer
    x = 11,014,879.80

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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.