Home / 21,181,001.52-31,771,450.20-11,954,791.50

Finding the Fourth Proportional to 21,181,001.52, 31,771,450.20 and 11,954,791.50

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Solution

The fourth proportional to 21,181,001.52, 31,771,450.20 and 11,954,791.50 is: 17,932,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,001.52 : 31,771,450.20 = 11,954,791.50 : x
  2. Step 2: Convert to fraction form
    21,181,001.52/31,771,450.20 = 11,954,791.50/x
  3. Step 3: Cross multiply
    21,181,001.52x = 31,771,450.20 × 11,954,791.50
  4. Step 4: Simplify right side
    21,181,001.52x = 379,821,062,793,633.31
  5. Step 5: Solve for x
    x = 379,821,062,793,633.31/21,181,001.52
  6. Step 6: Final answer
    x = 17,932,157.86

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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.