Home / 39,640.70-54,704.69-21,735.66

Finding the Fourth Proportional to 39,640.70, 54,704.69 and 21,735.66

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Solution

The fourth proportional to 39,640.70, 54,704.69 and 21,735.66 is: 29,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,640.70 : 54,704.69 = 21,735.66 : x
  2. Step 2: Convert to fraction form
    39,640.70/54,704.69 = 21,735.66/x
  3. Step 3: Cross multiply
    39,640.70x = 54,704.69 × 21,735.66
  4. Step 4: Simplify right side
    39,640.70x = 1,189,042,542.25
  5. Step 5: Solve for x
    x = 1,189,042,542.25/39,640.70
  6. Step 6: Final answer
    x = 29,995.50

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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.