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Finding the Fourth Proportional to 18,453.27, 27,680.07 and 5,305.65

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Solution

The fourth proportional to 18,453.27, 27,680.07 and 5,305.65 is: 7,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.27 : 27,680.07 = 5,305.65 : x
  2. Step 2: Convert to fraction form
    18,453.27/27,680.07 = 5,305.65/x
  3. Step 3: Cross multiply
    18,453.27x = 27,680.07 × 5,305.65
  4. Step 4: Simplify right side
    18,453.27x = 146,860,763.40
  5. Step 5: Solve for x
    x = 146,860,763.40/18,453.27
  6. Step 6: Final answer
    x = 7,958.52

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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.