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Finding the Fourth Proportional to 18,135.84, 27,169.02 and 8,748.12

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Solution

The fourth proportional to 18,135.84, 27,169.02 and 8,748.12 is: 13,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.84 : 27,169.02 = 8,748.12 : x
  2. Step 2: Convert to fraction form
    18,135.84/27,169.02 = 8,748.12/x
  3. Step 3: Cross multiply
    18,135.84x = 27,169.02 × 8,748.12
  4. Step 4: Simplify right side
    18,135.84x = 237,677,847.24
  5. Step 5: Solve for x
    x = 237,677,847.24/18,135.84
  6. Step 6: Final answer
    x = 13,105.42

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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.