Home / 39,853.82-54,996.35-21,949.58

Finding the Fourth Proportional to 39,853.82, 54,996.35 and 21,949.58

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Solution

The fourth proportional to 39,853.82, 54,996.35 and 21,949.58 is: 30,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,853.82 : 54,996.35 = 21,949.58 : x
  2. Step 2: Convert to fraction form
    39,853.82/54,996.35 = 21,949.58/x
  3. Step 3: Cross multiply
    39,853.82x = 54,996.35 × 21,949.58
  4. Step 4: Simplify right side
    39,853.82x = 1,207,146,399.30
  5. Step 5: Solve for x
    x = 1,207,146,399.30/39,853.82
  6. Step 6: Final answer
    x = 30,289.36

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1.5x scale

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.