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Finding the Fourth Proportional to 18,028.35, 27,029.57 and 8,028.09

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Solution

The fourth proportional to 18,028.35, 27,029.57 and 8,028.09 is: 12,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,028.35 : 27,029.57 = 8,028.09 : x
  2. Step 2: Convert to fraction form
    18,028.35/27,029.57 = 8,028.09/x
  3. Step 3: Cross multiply
    18,028.35x = 27,029.57 × 8,028.09
  4. Step 4: Simplify right side
    18,028.35x = 216,995,780.48
  5. Step 5: Solve for x
    x = 216,995,780.48/18,028.35
  6. Step 6: Final answer
    x = 12,036.36

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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.