Home / 20,279.92-27,984.47-11,326.18

Finding the Fourth Proportional to 20,279.92, 27,984.47 and 11,326.18

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Solution

The fourth proportional to 20,279.92, 27,984.47 and 11,326.18 is: 15,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.92 : 27,984.47 = 11,326.18 : x
  2. Step 2: Convert to fraction form
    20,279.92/27,984.47 = 11,326.18/x
  3. Step 3: Cross multiply
    20,279.92x = 27,984.47 × 11,326.18
  4. Step 4: Simplify right side
    20,279.92x = 316,957,087.79
  5. Step 5: Solve for x
    x = 316,957,087.79/20,279.92
  6. Step 6: Final answer
    x = 15,629.11

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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.