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Finding the Fourth Proportional to 18,253.74, 27,380.61 and 7,165.65

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Solution

The fourth proportional to 18,253.74, 27,380.61 and 7,165.65 is: 10,748.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.74 : 27,380.61 = 7,165.65 : x
  2. Step 2: Convert to fraction form
    18,253.74/27,380.61 = 7,165.65/x
  3. Step 3: Cross multiply
    18,253.74x = 27,380.61 × 7,165.65
  4. Step 4: Simplify right side
    18,253.74x = 196,199,868.05
  5. Step 5: Solve for x
    x = 196,199,868.05/18,253.74
  6. Step 6: Final answer
    x = 10,748.48

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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.