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Finding the Fourth Proportional to 18,655.68, 27,993.24 and 8,265

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Solution

The fourth proportional to 18,655.68, 27,993.24 and 8,265 is: 12,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.68 : 27,993.24 = 8,265 : x
  2. Step 2: Convert to fraction form
    18,655.68/27,993.24 = 8,265/x
  3. Step 3: Cross multiply
    18,655.68x = 27,993.24 × 8,265
  4. Step 4: Simplify right side
    18,655.68x = 231,364,128.60
  5. Step 5: Solve for x
    x = 231,364,128.60/18,655.68
  6. Step 6: Final answer
    x = 12,401.81

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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.