Home / 12,511,987.20-18,744,361.20-6,426,003.60

Finding the Fourth Proportional to 12,511,987.20, 18,744,361.20 and 6,426,003.60

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Solution

The fourth proportional to 12,511,987.20, 18,744,361.20 and 6,426,003.60 is: 9,626,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511,987.20 : 18,744,361.20 = 6,426,003.60 : x
  2. Step 2: Convert to fraction form
    12,511,987.20/18,744,361.20 = 6,426,003.60/x
  3. Step 3: Cross multiply
    12,511,987.20x = 18,744,361.20 × 6,426,003.60
  4. Step 4: Simplify right side
    12,511,987.20x = 120,451,332,550,900.31
  5. Step 5: Solve for x
    x = 120,451,332,550,900.31/12,511,987.20
  6. Step 6: Final answer
    x = 9,626,874.66

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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.