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Finding the Fourth Proportional to 10,993.87, 15,173.49 and 8,336.80

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Solution

The fourth proportional to 10,993.87, 15,173.49 and 8,336.80 is: 11,506.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,993.87 : 15,173.49 = 8,336.80 : x
  2. Step 2: Convert to fraction form
    10,993.87/15,173.49 = 8,336.80/x
  3. Step 3: Cross multiply
    10,993.87x = 15,173.49 × 8,336.80
  4. Step 4: Simplify right side
    10,993.87x = 126,498,351.43
  5. Step 5: Solve for x
    x = 126,498,351.43/10,993.87
  6. Step 6: Final answer
    x = 11,506.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.