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Finding the Fourth Proportional to 17,183.76, 25,788.76 and 12,185.68

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Solution

The fourth proportional to 17,183.76, 25,788.76 and 12,185.68 is: 18,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,183.76 : 25,788.76 = 12,185.68 : x
  2. Step 2: Convert to fraction form
    17,183.76/25,788.76 = 12,185.68/x
  3. Step 3: Cross multiply
    17,183.76x = 25,788.76 × 12,185.68
  4. Step 4: Simplify right side
    17,183.76x = 314,253,576.96
  5. Step 5: Solve for x
    x = 314,253,576.96/17,183.76
  6. Step 6: Final answer
    x = 18,287.82

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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.