Home / 26,668.44-39,986.19-12,619.80

Finding the Fourth Proportional to 26,668.44, 39,986.19 and 12,619.80

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Solution

The fourth proportional to 26,668.44, 39,986.19 and 12,619.80 is: 18,921.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,668.44 : 39,986.19 = 12,619.80 : x
  2. Step 2: Convert to fraction form
    26,668.44/39,986.19 = 12,619.80/x
  3. Step 3: Cross multiply
    26,668.44x = 39,986.19 × 12,619.80
  4. Step 4: Simplify right side
    26,668.44x = 504,617,720.56
  5. Step 5: Solve for x
    x = 504,617,720.56/26,668.44
  6. Step 6: Final answer
    x = 18,921.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.