Home / 39,763.12-54,872.40-21,857.97

Finding the Fourth Proportional to 39,763.12, 54,872.40 and 21,857.97

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Solution

The fourth proportional to 39,763.12, 54,872.40 and 21,857.97 is: 30,163.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.12 : 54,872.40 = 21,857.97 : x
  2. Step 2: Convert to fraction form
    39,763.12/54,872.40 = 21,857.97/x
  3. Step 3: Cross multiply
    39,763.12x = 54,872.40 × 21,857.97
  4. Step 4: Simplify right side
    39,763.12x = 1,199,399,273.03
  5. Step 5: Solve for x
    x = 1,199,399,273.03/39,763.12
  6. Step 6: Final answer
    x = 30,163.61

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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.