Home / 21,668,912.25-29,902,451.04-11,879,021.82

Finding the Fourth Proportional to 21,668,912.25, 29,902,451.04 and 11,879,021.82

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Solution

The fourth proportional to 21,668,912.25, 29,902,451.04 and 11,879,021.82 is: 16,392,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668,912.25 : 29,902,451.04 = 11,879,021.82 : x
  2. Step 2: Convert to fraction form
    21,668,912.25/29,902,451.04 = 11,879,021.82/x
  3. Step 3: Cross multiply
    21,668,912.25x = 29,902,451.04 × 11,879,021.82
  4. Step 4: Simplify right side
    21,668,912.25x = 355,211,868,375,641.69
  5. Step 5: Solve for x
    x = 355,211,868,375,641.69/21,668,912.25
  6. Step 6: Final answer
    x = 16,392,694.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.