Home / 18,981,074.22-28,517,032.98-12,170,989.98

Finding the Fourth Proportional to 18,981,074.22, 28,517,032.98 and 12,170,989.98

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Solution

The fourth proportional to 18,981,074.22, 28,517,032.98 and 12,170,989.98 is: 18,285,610.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,074.22 : 28,517,032.98 = 12,170,989.98 : x
  2. Step 2: Convert to fraction form
    18,981,074.22/28,517,032.98 = 12,170,989.98/x
  3. Step 3: Cross multiply
    18,981,074.22x = 28,517,032.98 × 12,170,989.98
  4. Step 4: Simplify right side
    18,981,074.22x = 347,080,522,658,909.56
  5. Step 5: Solve for x
    x = 347,080,522,658,909.56/18,981,074.22
  6. Step 6: Final answer
    x = 18,285,610.11

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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.