Home / 39,693.31-54,777.16-21,787.92

Finding the Fourth Proportional to 39,693.31, 54,777.16 and 21,787.92

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Solution

The fourth proportional to 39,693.31, 54,777.16 and 21,787.92 is: 30,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693.31 : 54,777.16 = 21,787.92 : x
  2. Step 2: Convert to fraction form
    39,693.31/54,777.16 = 21,787.92/x
  3. Step 3: Cross multiply
    39,693.31x = 54,777.16 × 21,787.92
  4. Step 4: Simplify right side
    39,693.31x = 1,193,480,407.14
  5. Step 5: Solve for x
    x = 1,193,480,407.14/39,693.31
  6. Step 6: Final answer
    x = 30,067.55

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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.