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Finding the Fourth Proportional to 18,406.26, 27,609.66 and 6,720.66

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Solution

The fourth proportional to 18,406.26, 27,609.66 and 6,720.66 is: 10,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.26 : 27,609.66 = 6,720.66 : x
  2. Step 2: Convert to fraction form
    18,406.26/27,609.66 = 6,720.66/x
  3. Step 3: Cross multiply
    18,406.26x = 27,609.66 × 6,720.66
  4. Step 4: Simplify right side
    18,406.26x = 185,555,137.58
  5. Step 5: Solve for x
    x = 185,555,137.58/18,406.26
  6. Step 6: Final answer
    x = 10,081.09

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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.