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Finding the Fourth Proportional to 18,231.91, 27,329.69 and 7,704.58

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Solution

The fourth proportional to 18,231.91, 27,329.69 and 7,704.58 is: 11,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.91 : 27,329.69 = 7,704.58 : x
  2. Step 2: Convert to fraction form
    18,231.91/27,329.69 = 7,704.58/x
  3. Step 3: Cross multiply
    18,231.91x = 27,329.69 × 7,704.58
  4. Step 4: Simplify right side
    18,231.91x = 210,563,733.92
  5. Step 5: Solve for x
    x = 210,563,733.92/18,231.91
  6. Step 6: Final answer
    x = 11,549.19

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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.