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Finding the Fourth Proportional to 18,369.68, 27,538.34 and 7,284.15

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Solution

The fourth proportional to 18,369.68, 27,538.34 and 7,284.15 is: 10,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.68 : 27,538.34 = 7,284.15 : x
  2. Step 2: Convert to fraction form
    18,369.68/27,538.34 = 7,284.15/x
  3. Step 3: Cross multiply
    18,369.68x = 27,538.34 × 7,284.15
  4. Step 4: Simplify right side
    18,369.68x = 200,593,362.89
  5. Step 5: Solve for x
    x = 200,593,362.89/18,369.68
  6. Step 6: Final answer
    x = 10,919.81

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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.