Home / 39,743.82-54,847.62-21,839.94

Finding the Fourth Proportional to 39,743.82, 54,847.62 and 21,839.94

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Solution

The fourth proportional to 39,743.82, 54,847.62 and 21,839.94 is: 30,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.82 : 54,847.62 = 21,839.94 : x
  2. Step 2: Convert to fraction form
    39,743.82/54,847.62 = 21,839.94/x
  3. Step 3: Cross multiply
    39,743.82x = 54,847.62 × 21,839.94
  4. Step 4: Simplify right side
    39,743.82x = 1,197,868,729.94
  5. Step 5: Solve for x
    x = 1,197,868,729.94/39,743.82
  6. Step 6: Final answer
    x = 30,139.75

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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.