Home / 39,743.52-54,845.91-21,839.28

Finding the Fourth Proportional to 39,743.52, 54,845.91 and 21,839.28

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Solution

The fourth proportional to 39,743.52, 54,845.91 and 21,839.28 is: 30,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.52 : 54,845.91 = 21,839.28 : x
  2. Step 2: Convert to fraction form
    39,743.52/54,845.91 = 21,839.28/x
  3. Step 3: Cross multiply
    39,743.52x = 54,845.91 × 21,839.28
  4. Step 4: Simplify right side
    39,743.52x = 1,197,795,185.34
  5. Step 5: Solve for x
    x = 1,197,795,185.34/39,743.52
  6. Step 6: Final answer
    x = 30,138.13

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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.