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Finding the Fourth Proportional to 18,216.59, 27,301.21 and 8,213.99

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Solution

The fourth proportional to 18,216.59, 27,301.21 and 8,213.99 is: 12,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.59 : 27,301.21 = 8,213.99 : x
  2. Step 2: Convert to fraction form
    18,216.59/27,301.21 = 8,213.99/x
  3. Step 3: Cross multiply
    18,216.59x = 27,301.21 × 8,213.99
  4. Step 4: Simplify right side
    18,216.59x = 224,251,708.89
  5. Step 5: Solve for x
    x = 224,251,708.89/18,216.59
  6. Step 6: Final answer
    x = 12,310.30

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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.