Home / 39,758.35-54,865.60-21,608.65

Finding the Fourth Proportional to 39,758.35, 54,865.60 and 21,608.65

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Solution

The fourth proportional to 39,758.35, 54,865.60 and 21,608.65 is: 29,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.35 : 54,865.60 = 21,608.65 : x
  2. Step 2: Convert to fraction form
    39,758.35/54,865.60 = 21,608.65/x
  3. Step 3: Cross multiply
    39,758.35x = 54,865.60 × 21,608.65
  4. Step 4: Simplify right side
    39,758.35x = 1,185,571,273.11
  5. Step 5: Solve for x
    x = 1,185,571,273.11/39,758.35
  6. Step 6: Final answer
    x = 29,819.43

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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.