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Finding the Fourth Proportional to 18,253.24, 27,379.86 and 7,165.15

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Solution

The fourth proportional to 18,253.24, 27,379.86 and 7,165.15 is: 10,747.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.24 : 27,379.86 = 7,165.15 : x
  2. Step 2: Convert to fraction form
    18,253.24/27,379.86 = 7,165.15/x
  3. Step 3: Cross multiply
    18,253.24x = 27,379.86 × 7,165.15
  4. Step 4: Simplify right side
    18,253.24x = 196,180,803.88
  5. Step 5: Solve for x
    x = 196,180,803.88/18,253.24
  6. Step 6: Final answer
    x = 10,747.73

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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.