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Finding the Fourth Proportional to 18,028.86, 27,027.60 and 8,664.18

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Solution

The fourth proportional to 18,028.86, 27,027.60 and 8,664.18 is: 12,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,028.86 : 27,027.60 = 8,664.18 : x
  2. Step 2: Convert to fraction form
    18,028.86/27,027.60 = 8,664.18/x
  3. Step 3: Cross multiply
    18,028.86x = 27,027.60 × 8,664.18
  4. Step 4: Simplify right side
    18,028.86x = 234,171,991.37
  5. Step 5: Solve for x
    x = 234,171,991.37/18,028.86
  6. Step 6: Final answer
    x = 12,988.73

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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.