Home / 20,279.52-27,984.42-11,326.60

Finding the Fourth Proportional to 20,279.52, 27,984.42 and 11,326.60

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Solution

The fourth proportional to 20,279.52, 27,984.42 and 11,326.60 is: 15,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.52 : 27,984.42 = 11,326.60 : x
  2. Step 2: Convert to fraction form
    20,279.52/27,984.42 = 11,326.60/x
  3. Step 3: Cross multiply
    20,279.52x = 27,984.42 × 11,326.60
  4. Step 4: Simplify right side
    20,279.52x = 316,968,331.57
  5. Step 5: Solve for x
    x = 316,968,331.57/20,279.52
  6. Step 6: Final answer
    x = 15,629.97

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1.5x scale

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.