Home / 18,981,080.18-28,517,041.71-12,170,995.86

Finding the Fourth Proportional to 18,981,080.18, 28,517,041.71 and 12,170,995.86

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Solution

The fourth proportional to 18,981,080.18, 28,517,041.71 and 12,170,995.86 is: 18,285,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,080.18 : 28,517,041.71 = 12,170,995.86 : x
  2. Step 2: Convert to fraction form
    18,981,080.18/28,517,041.71 = 12,170,995.86/x
  3. Step 3: Cross multiply
    18,981,080.18x = 28,517,041.71 × 12,170,995.86
  4. Step 4: Simplify right side
    18,981,080.18x = 347,080,796,591,857.31
  5. Step 5: Solve for x
    x = 347,080,796,591,857.31/18,981,080.18
  6. Step 6: Final answer
    x = 18,285,618.81

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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.