Home / 39,787.08-54,906.19-21,883.30

Finding the Fourth Proportional to 39,787.08, 54,906.19 and 21,883.30

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Solution

The fourth proportional to 39,787.08, 54,906.19 and 21,883.30 is: 30,198.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.08 : 54,906.19 = 21,883.30 : x
  2. Step 2: Convert to fraction form
    39,787.08/54,906.19 = 21,883.30/x
  3. Step 3: Cross multiply
    39,787.08x = 54,906.19 × 21,883.30
  4. Step 4: Simplify right side
    39,787.08x = 1,201,528,627.63
  5. Step 5: Solve for x
    x = 1,201,528,627.63/39,787.08
  6. Step 6: Final answer
    x = 30,198.96

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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.