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Finding the Fourth Proportional to 18,081.68, 27,140.03 and 8,728.26

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Solution

The fourth proportional to 18,081.68, 27,140.03 and 8,728.26 is: 13,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.68 : 27,140.03 = 8,728.26 : x
  2. Step 2: Convert to fraction form
    18,081.68/27,140.03 = 8,728.26/x
  3. Step 3: Cross multiply
    18,081.68x = 27,140.03 × 8,728.26
  4. Step 4: Simplify right side
    18,081.68x = 236,885,194.61
  5. Step 5: Solve for x
    x = 236,885,194.61/18,081.68
  6. Step 6: Final answer
    x = 13,100.84

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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.