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Finding the Fourth Proportional to 18,129.21, 27,168.30 and 14,414.96

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Solution

The fourth proportional to 18,129.21, 27,168.30 and 14,414.96 is: 21,602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.21 : 27,168.30 = 14,414.96 : x
  2. Step 2: Convert to fraction form
    18,129.21/27,168.30 = 14,414.96/x
  3. Step 3: Cross multiply
    18,129.21x = 27,168.30 × 14,414.96
  4. Step 4: Simplify right side
    18,129.21x = 391,629,821.93
  5. Step 5: Solve for x
    x = 391,629,821.93/18,129.21
  6. Step 6: Final answer
    x = 21,602.14

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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.