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Finding the Fourth Proportional to 17,855.62, 26,786.81 and 7,182.79

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Solution

The fourth proportional to 17,855.62, 26,786.81 and 7,182.79 is: 10,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,855.62 : 26,786.81 = 7,182.79 : x
  2. Step 2: Convert to fraction form
    17,855.62/26,786.81 = 7,182.79/x
  3. Step 3: Cross multiply
    17,855.62x = 26,786.81 × 7,182.79
  4. Step 4: Simplify right side
    17,855.62x = 192,404,031.00
  5. Step 5: Solve for x
    x = 192,404,031.00/17,855.62
  6. Step 6: Final answer
    x = 10,775.54

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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.