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Finding the Fourth Proportional to 18,236.40, 27,358.20 and 8,236.14

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Solution

The fourth proportional to 18,236.40, 27,358.20 and 8,236.14 is: 12,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.40 : 27,358.20 = 8,236.14 : x
  2. Step 2: Convert to fraction form
    18,236.40/27,358.20 = 8,236.14/x
  3. Step 3: Cross multiply
    18,236.40x = 27,358.20 × 8,236.14
  4. Step 4: Simplify right side
    18,236.40x = 225,325,965.35
  5. Step 5: Solve for x
    x = 225,325,965.35/18,236.40
  6. Step 6: Final answer
    x = 12,355.84

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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.