Home / 20,139,879.79-27,796,367.31-11,881,960.97

Finding the Fourth Proportional to 20,139,879.79, 27,796,367.31 and 11,881,960.97

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Solution

The fourth proportional to 20,139,879.79, 27,796,367.31 and 11,881,960.97 is: 16,399,072.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,879.79 : 27,796,367.31 = 11,881,960.97 : x
  2. Step 2: Convert to fraction form
    20,139,879.79/27,796,367.31 = 11,881,960.97/x
  3. Step 3: Cross multiply
    20,139,879.79x = 27,796,367.31 × 11,881,960.97
  4. Step 4: Simplify right side
    20,139,879.79x = 330,275,351,485,203.88
  5. Step 5: Solve for x
    x = 330,275,351,485,203.88/20,139,879.79
  6. Step 6: Final answer
    x = 16,399,072.64

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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.