Home / 39,761.74-54,871.22-21,857.04

Finding the Fourth Proportional to 39,761.74, 54,871.22 and 21,857.04

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Solution

The fourth proportional to 39,761.74, 54,871.22 and 21,857.04 is: 30,162.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,761.74 : 54,871.22 = 21,857.04 : x
  2. Step 2: Convert to fraction form
    39,761.74/54,871.22 = 21,857.04/x
  3. Step 3: Cross multiply
    39,761.74x = 54,871.22 × 21,857.04
  4. Step 4: Simplify right side
    39,761.74x = 1,199,322,505.03
  5. Step 5: Solve for x
    x = 1,199,322,505.03/39,761.74
  6. Step 6: Final answer
    x = 30,162.73

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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.