Home / 18,703,847.80-28,040,219.70-7,929,422.20

Finding the Fourth Proportional to 18,703,847.80, 28,040,219.70 and 7,929,422.20

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Solution

The fourth proportional to 18,703,847.80, 28,040,219.70 and 7,929,422.20 is: 11,887,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703,847.80 : 28,040,219.70 = 7,929,422.20 : x
  2. Step 2: Convert to fraction form
    18,703,847.80/28,040,219.70 = 7,929,422.20/x
  3. Step 3: Cross multiply
    18,703,847.80x = 28,040,219.70 × 7,929,422.20
  4. Step 4: Simplify right side
    18,703,847.80x = 222,342,740,582,057.34
  5. Step 5: Solve for x
    x = 222,342,740,582,057.34/18,703,847.80
  6. Step 6: Final answer
    x = 11,887,540.09

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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.