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Finding the Fourth Proportional to 11,998.83, 17,998.25 and 4,207.65

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Solution

The fourth proportional to 11,998.83, 17,998.25 and 4,207.65 is: 6,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.83 : 17,998.25 = 4,207.65 : x
  2. Step 2: Convert to fraction form
    11,998.83/17,998.25 = 4,207.65/x
  3. Step 3: Cross multiply
    11,998.83x = 17,998.25 × 4,207.65
  4. Step 4: Simplify right side
    11,998.83x = 75,730,315.57
  5. Step 5: Solve for x
    x = 75,730,315.57/11,998.83
  6. Step 6: Final answer
    x = 6,311.48

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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.