Home / 39,809.39-54,936.36-21,660.39

Finding the Fourth Proportional to 39,809.39, 54,936.36 and 21,660.39

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Solution

The fourth proportional to 39,809.39, 54,936.36 and 21,660.39 is: 29,891.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,809.39 : 54,936.36 = 21,660.39 : x
  2. Step 2: Convert to fraction form
    39,809.39/54,936.36 = 21,660.39/x
  3. Step 3: Cross multiply
    39,809.39x = 54,936.36 × 21,660.39
  4. Step 4: Simplify right side
    39,809.39x = 1,189,942,982.78
  5. Step 5: Solve for x
    x = 1,189,942,982.78/39,809.39
  6. Step 6: Final answer
    x = 29,891.02

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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.