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Finding the Fourth Proportional to 18,080.28, 27,129.68 and 8,728.28

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Solution

The fourth proportional to 18,080.28, 27,129.68 and 8,728.28 is: 13,096.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,080.28 : 27,129.68 = 8,728.28 : x
  2. Step 2: Convert to fraction form
    18,080.28/27,129.68 = 8,728.28/x
  3. Step 3: Cross multiply
    18,080.28x = 27,129.68 × 8,728.28
  4. Step 4: Simplify right side
    18,080.28x = 236,795,443.35
  5. Step 5: Solve for x
    x = 236,795,443.35/18,080.28
  6. Step 6: Final answer
    x = 13,096.89

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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.