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Finding the Fourth Proportional to 18,015.27, 27,019.71 and 4,865.94

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Solution

The fourth proportional to 18,015.27, 27,019.71 and 4,865.94 is: 7,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.27 : 27,019.71 = 4,865.94 : x
  2. Step 2: Convert to fraction form
    18,015.27/27,019.71 = 4,865.94/x
  3. Step 3: Cross multiply
    18,015.27x = 27,019.71 × 4,865.94
  4. Step 4: Simplify right side
    18,015.27x = 131,476,287.68
  5. Step 5: Solve for x
    x = 131,476,287.68/18,015.27
  6. Step 6: Final answer
    x = 7,298.05

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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.