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Finding the Fourth Proportional to 18,012.69, 27,015.89 and 8,149.65

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Solution

The fourth proportional to 18,012.69, 27,015.89 and 8,149.65 is: 12,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.69 : 27,015.89 = 8,149.65 : x
  2. Step 2: Convert to fraction form
    18,012.69/27,015.89 = 8,149.65/x
  3. Step 3: Cross multiply
    18,012.69x = 27,015.89 × 8,149.65
  4. Step 4: Simplify right side
    18,012.69x = 220,170,007.19
  5. Step 5: Solve for x
    x = 220,170,007.19/18,012.69
  6. Step 6: Final answer
    x = 12,223.05

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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.