Home / 39,957.25-55,141.21-21,807.73

Finding the Fourth Proportional to 39,957.25, 55,141.21 and 21,807.73

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Solution

The fourth proportional to 39,957.25, 55,141.21 and 21,807.73 is: 30,094.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,957.25 : 55,141.21 = 21,807.73 : x
  2. Step 2: Convert to fraction form
    39,957.25/55,141.21 = 21,807.73/x
  3. Step 3: Cross multiply
    39,957.25x = 55,141.21 × 21,807.73
  4. Step 4: Simplify right side
    39,957.25x = 1,202,504,593.07
  5. Step 5: Solve for x
    x = 1,202,504,593.07/39,957.25
  6. Step 6: Final answer
    x = 30,094.78

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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.