Home / 39,857.94-55,007.33-21,956.31

Finding the Fourth Proportional to 39,857.94, 55,007.33 and 21,956.31

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Solution

The fourth proportional to 39,857.94, 55,007.33 and 21,956.31 is: 30,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.94 : 55,007.33 = 21,956.31 : x
  2. Step 2: Convert to fraction form
    39,857.94/55,007.33 = 21,956.31/x
  3. Step 3: Cross multiply
    39,857.94x = 55,007.33 × 21,956.31
  4. Step 4: Simplify right side
    39,857.94x = 1,207,757,879.97
  5. Step 5: Solve for x
    x = 1,207,757,879.97/39,857.94
  6. Step 6: Final answer
    x = 30,301.56

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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.