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Finding the Fourth Proportional to 27,789.80, 41,703.90 and 20,004.20

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Solution

The fourth proportional to 27,789.80, 41,703.90 and 20,004.20 is: 30,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.80 : 41,703.90 = 20,004.20 : x
  2. Step 2: Convert to fraction form
    27,789.80/41,703.90 = 20,004.20/x
  3. Step 3: Cross multiply
    27,789.80x = 41,703.90 × 20,004.20
  4. Step 4: Simplify right side
    27,789.80x = 834,253,156.38
  5. Step 5: Solve for x
    x = 834,253,156.38/27,789.80
  6. Step 6: Final answer
    x = 30,020.12

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1.5x scale

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.