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Finding the Fourth Proportional to 18,190.80, 27,286.20 and 11,597.40

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Solution

The fourth proportional to 18,190.80, 27,286.20 and 11,597.40 is: 17,396.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190.80 : 27,286.20 = 11,597.40 : x
  2. Step 2: Convert to fraction form
    18,190.80/27,286.20 = 11,597.40/x
  3. Step 3: Cross multiply
    18,190.80x = 27,286.20 × 11,597.40
  4. Step 4: Simplify right side
    18,190.80x = 316,448,975.88
  5. Step 5: Solve for x
    x = 316,448,975.88/18,190.80
  6. Step 6: Final answer
    x = 17,396.10

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Double scale
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Similar ratio
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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.