Home / 21,135,447.48-31,693,177.31-8,187,662.53

Finding the Fourth Proportional to 21,135,447.48, 31,693,177.31 and 8,187,662.53

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Solution

The fourth proportional to 21,135,447.48, 31,693,177.31 and 8,187,662.53 is: 12,277,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,447.48 : 31,693,177.31 = 8,187,662.53 : x
  2. Step 2: Convert to fraction form
    21,135,447.48/31,693,177.31 = 8,187,662.53/x
  3. Step 3: Cross multiply
    21,135,447.48x = 31,693,177.31 × 8,187,662.53
  4. Step 4: Simplify right side
    21,135,447.48x = 259,493,040,317,733.19
  5. Step 5: Solve for x
    x = 259,493,040,317,733.19/21,135,447.48
  6. Step 6: Final answer
    x = 12,277,622.25

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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.