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Finding the Fourth Proportional to 12,188.63, 18,282.94 and 2,954.63

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Solution

The fourth proportional to 12,188.63, 18,282.94 and 2,954.63 is: 4,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.63 : 18,282.94 = 2,954.63 : x
  2. Step 2: Convert to fraction form
    12,188.63/18,282.94 = 2,954.63/x
  3. Step 3: Cross multiply
    12,188.63x = 18,282.94 × 2,954.63
  4. Step 4: Simplify right side
    12,188.63x = 54,019,224.21
  5. Step 5: Solve for x
    x = 54,019,224.21/12,188.63
  6. Step 6: Final answer
    x = 4,431.94

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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.