Home / 39,691.82-54,776.66-21,786.64

Finding the Fourth Proportional to 39,691.82, 54,776.66 and 21,786.64

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Solution

The fourth proportional to 39,691.82, 54,776.66 and 21,786.64 is: 30,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,691.82 : 54,776.66 = 21,786.64 : x
  2. Step 2: Convert to fraction form
    39,691.82/54,776.66 = 21,786.64/x
  3. Step 3: Cross multiply
    39,691.82x = 54,776.66 × 21,786.64
  4. Step 4: Simplify right side
    39,691.82x = 1,193,399,125.95
  5. Step 5: Solve for x
    x = 1,193,399,125.95/39,691.82
  6. Step 6: Final answer
    x = 30,066.62

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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.