Home / 39,920.82-59,863.92-21,196.80

Finding the Fourth Proportional to 39,920.82, 59,863.92 and 21,196.80

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Solution

The fourth proportional to 39,920.82, 59,863.92 and 21,196.80 is: 31,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.82 : 59,863.92 = 21,196.80 : x
  2. Step 2: Convert to fraction form
    39,920.82/59,863.92 = 21,196.80/x
  3. Step 3: Cross multiply
    39,920.82x = 59,863.92 × 21,196.80
  4. Step 4: Simplify right side
    39,920.82x = 1,268,923,539.46
  5. Step 5: Solve for x
    x = 1,268,923,539.46/39,920.82
  6. Step 6: Final answer
    x = 31,786.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.