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Finding the Fourth Proportional to 18,297.26, 27,455.12 and 7,211.92

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Solution

The fourth proportional to 18,297.26, 27,455.12 and 7,211.92 is: 10,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.26 : 27,455.12 = 7,211.92 : x
  2. Step 2: Convert to fraction form
    18,297.26/27,455.12 = 7,211.92/x
  3. Step 3: Cross multiply
    18,297.26x = 27,455.12 × 7,211.92
  4. Step 4: Simplify right side
    18,297.26x = 198,004,129.03
  5. Step 5: Solve for x
    x = 198,004,129.03/18,297.26
  6. Step 6: Final answer
    x = 10,821.52

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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.