Home / 27,771.38-38,296.49-20,982.09

Finding the Fourth Proportional to 27,771.38, 38,296.49 and 20,982.09

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Solution

The fourth proportional to 27,771.38, 38,296.49 and 20,982.09 is: 28,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,771.38 : 38,296.49 = 20,982.09 : x
  2. Step 2: Convert to fraction form
    27,771.38/38,296.49 = 20,982.09/x
  3. Step 3: Cross multiply
    27,771.38x = 38,296.49 × 20,982.09
  4. Step 4: Simplify right side
    27,771.38x = 803,540,399.86
  5. Step 5: Solve for x
    x = 803,540,399.86/27,771.38
  6. Step 6: Final answer
    x = 28,934.12

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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.