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Finding the Fourth Proportional to 18,655.74, 27,993.34 and 8,265.06

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Solution

The fourth proportional to 18,655.74, 27,993.34 and 8,265.06 is: 12,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.74 : 27,993.34 = 8,265.06 : x
  2. Step 2: Convert to fraction form
    18,655.74/27,993.34 = 8,265.06/x
  3. Step 3: Cross multiply
    18,655.74x = 27,993.34 × 8,265.06
  4. Step 4: Simplify right side
    18,655.74x = 231,366,634.70
  5. Step 5: Solve for x
    x = 231,366,634.70/18,655.74
  6. Step 6: Final answer
    x = 12,401.90

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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.