Home / 39,811.59-54,940.73-21,906.44

Finding the Fourth Proportional to 39,811.59, 54,940.73 and 21,906.44

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Solution

The fourth proportional to 39,811.59, 54,940.73 and 21,906.44 is: 30,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.59 : 54,940.73 = 21,906.44 : x
  2. Step 2: Convert to fraction form
    39,811.59/54,940.73 = 21,906.44/x
  3. Step 3: Cross multiply
    39,811.59x = 54,940.73 × 21,906.44
  4. Step 4: Simplify right side
    39,811.59x = 1,203,555,421.07
  5. Step 5: Solve for x
    x = 1,203,555,421.07/39,811.59
  6. Step 6: Final answer
    x = 30,231.28

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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.