Home / 12,831,747.20-19,247,620.80-11,981,441.60

Finding the Fourth Proportional to 12,831,747.20, 19,247,620.80 and 11,981,441.60

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Solution

The fourth proportional to 12,831,747.20, 19,247,620.80 and 11,981,441.60 is: 17,972,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831,747.20 : 19,247,620.80 = 11,981,441.60 : x
  2. Step 2: Convert to fraction form
    12,831,747.20/19,247,620.80 = 11,981,441.60/x
  3. Step 3: Cross multiply
    12,831,747.20x = 19,247,620.80 × 11,981,441.60
  4. Step 4: Simplify right side
    12,831,747.20x = 230,614,244,554,145.28
  5. Step 5: Solve for x
    x = 230,614,244,554,145.28/12,831,747.20
  6. Step 6: Final answer
    x = 17,972,162.40

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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.