Home / 39,786.96-54,907.32-21,882.60

Finding the Fourth Proportional to 39,786.96, 54,907.32 and 21,882.60

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Solution

The fourth proportional to 39,786.96, 54,907.32 and 21,882.60 is: 30,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.96 : 54,907.32 = 21,882.60 : x
  2. Step 2: Convert to fraction form
    39,786.96/54,907.32 = 21,882.60/x
  3. Step 3: Cross multiply
    39,786.96x = 54,907.32 × 21,882.60
  4. Step 4: Simplify right side
    39,786.96x = 1,201,514,920.63
  5. Step 5: Solve for x
    x = 1,201,514,920.63/39,786.96
  6. Step 6: Final answer
    x = 30,198.71

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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.