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Finding the Fourth Proportional to 18,129.64, 27,194.46 and 4,982.08

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Solution

The fourth proportional to 18,129.64, 27,194.46 and 4,982.08 is: 7,473.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.64 : 27,194.46 = 4,982.08 : x
  2. Step 2: Convert to fraction form
    18,129.64/27,194.46 = 4,982.08/x
  3. Step 3: Cross multiply
    18,129.64x = 27,194.46 × 4,982.08
  4. Step 4: Simplify right side
    18,129.64x = 135,484,975.28
  5. Step 5: Solve for x
    x = 135,484,975.28/18,129.64
  6. Step 6: Final answer
    x = 7,473.12

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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.