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Finding the Fourth Proportional to 20,163.59, 30,234.95 and 9,060.78

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Solution

The fourth proportional to 20,163.59, 30,234.95 and 9,060.78 is: 13,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.59 : 30,234.95 = 9,060.78 : x
  2. Step 2: Convert to fraction form
    20,163.59/30,234.95 = 9,060.78/x
  3. Step 3: Cross multiply
    20,163.59x = 30,234.95 × 9,060.78
  4. Step 4: Simplify right side
    20,163.59x = 273,952,230.26
  5. Step 5: Solve for x
    x = 273,952,230.26/20,163.59
  6. Step 6: Final answer
    x = 13,586.48

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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.