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Finding the Fourth Proportional to 18,630.76, 27,944.22 and 11,684.20

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Solution

The fourth proportional to 18,630.76, 27,944.22 and 11,684.20 is: 17,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.76 : 27,944.22 = 11,684.20 : x
  2. Step 2: Convert to fraction form
    18,630.76/27,944.22 = 11,684.20/x
  3. Step 3: Cross multiply
    18,630.76x = 27,944.22 × 11,684.20
  4. Step 4: Simplify right side
    18,630.76x = 326,505,855.32
  5. Step 5: Solve for x
    x = 326,505,855.32/18,630.76
  6. Step 6: Final answer
    x = 17,525.10

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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.