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Finding the Fourth Proportional to 18,427.97, 27,620.07 and 10,620.65

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Solution

The fourth proportional to 18,427.97, 27,620.07 and 10,620.65 is: 15,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.97 : 27,620.07 = 10,620.65 : x
  2. Step 2: Convert to fraction form
    18,427.97/27,620.07 = 10,620.65/x
  3. Step 3: Cross multiply
    18,427.97x = 27,620.07 × 10,620.65
  4. Step 4: Simplify right side
    18,427.97x = 293,342,958.35
  5. Step 5: Solve for x
    x = 293,342,958.35/18,427.97
  6. Step 6: Final answer
    x = 15,918.36

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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.