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Finding the Fourth Proportional to 18,101.88, 27,138.24 and 8,236.08

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Solution

The fourth proportional to 18,101.88, 27,138.24 and 8,236.08 is: 12,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.88 : 27,138.24 = 8,236.08 : x
  2. Step 2: Convert to fraction form
    18,101.88/27,138.24 = 8,236.08/x
  3. Step 3: Cross multiply
    18,101.88x = 27,138.24 × 8,236.08
  4. Step 4: Simplify right side
    18,101.88x = 223,512,715.70
  5. Step 5: Solve for x
    x = 223,512,715.70/18,101.88
  6. Step 6: Final answer
    x = 12,347.49

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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.