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Finding the Fourth Proportional to 27,679.52, 41,523.84 and 13,640.20

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Solution

The fourth proportional to 27,679.52, 41,523.84 and 13,640.20 is: 20,462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,679.52 : 41,523.84 = 13,640.20 : x
  2. Step 2: Convert to fraction form
    27,679.52/41,523.84 = 13,640.20/x
  3. Step 3: Cross multiply
    27,679.52x = 41,523.84 × 13,640.20
  4. Step 4: Simplify right side
    27,679.52x = 566,393,378.56
  5. Step 5: Solve for x
    x = 566,393,378.56/27,679.52
  6. Step 6: Final answer
    x = 20,462.54

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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.