Home / 39,921.82-59,865.42-21,197.80

Finding the Fourth Proportional to 39,921.82, 59,865.42 and 21,197.80

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Solution

The fourth proportional to 39,921.82, 59,865.42 and 21,197.80 is: 31,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,921.82 : 59,865.42 = 21,197.80 : x
  2. Step 2: Convert to fraction form
    39,921.82/59,865.42 = 21,197.80/x
  3. Step 3: Cross multiply
    39,921.82x = 59,865.42 × 21,197.80
  4. Step 4: Simplify right side
    39,921.82x = 1,269,015,200.08
  5. Step 5: Solve for x
    x = 1,269,015,200.08/39,921.82
  6. Step 6: Final answer
    x = 31,787.51

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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.