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Finding the Fourth Proportional to 18,379.29, 27,578.06 and 7,285.74

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Solution

The fourth proportional to 18,379.29, 27,578.06 and 7,285.74 is: 10,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.29 : 27,578.06 = 7,285.74 : x
  2. Step 2: Convert to fraction form
    18,379.29/27,578.06 = 7,285.74/x
  3. Step 3: Cross multiply
    18,379.29x = 27,578.06 × 7,285.74
  4. Step 4: Simplify right side
    18,379.29x = 200,926,538.44
  5. Step 5: Solve for x
    x = 200,926,538.44/18,379.29
  6. Step 6: Final answer
    x = 10,932.23

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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.