Home / 20,665,510.80-30,981,470.04-7,211,786.64

Finding the Fourth Proportional to 20,665,510.80, 30,981,470.04 and 7,211,786.64

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Solution

The fourth proportional to 20,665,510.80, 30,981,470.04 and 7,211,786.64 is: 10,811,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665,510.80 : 30,981,470.04 = 7,211,786.64 : x
  2. Step 2: Convert to fraction form
    20,665,510.80/30,981,470.04 = 7,211,786.64/x
  3. Step 3: Cross multiply
    20,665,510.80x = 30,981,470.04 × 7,211,786.64
  4. Step 4: Simplify right side
    20,665,510.80x = 223,431,751,722,032.25
  5. Step 5: Solve for x
    x = 223,431,751,722,032.25/20,665,510.80
  6. Step 6: Final answer
    x = 10,811,818.49

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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.