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Finding the Fourth Proportional to 11,074.20, 16,636.90 and 7,618.20

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Solution

The fourth proportional to 11,074.20, 16,636.90 and 7,618.20 is: 11,444.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,074.20 : 16,636.90 = 7,618.20 : x
  2. Step 2: Convert to fraction form
    11,074.20/16,636.90 = 7,618.20/x
  3. Step 3: Cross multiply
    11,074.20x = 16,636.90 × 7,618.20
  4. Step 4: Simplify right side
    11,074.20x = 126,743,231.58
  5. Step 5: Solve for x
    x = 126,743,231.58/11,074.20
  6. Step 6: Final answer
    x = 11,444.91

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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.