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Finding the Fourth Proportional to 10,994.80, 16,481.40 and 5,443.60

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Solution

The fourth proportional to 10,994.80, 16,481.40 and 5,443.60 is: 8,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,994.80 : 16,481.40 = 5,443.60 : x
  2. Step 2: Convert to fraction form
    10,994.80/16,481.40 = 5,443.60/x
  3. Step 3: Cross multiply
    10,994.80x = 16,481.40 × 5,443.60
  4. Step 4: Simplify right side
    10,994.80x = 89,718,149.04
  5. Step 5: Solve for x
    x = 89,718,149.04/10,994.80
  6. Step 6: Final answer
    x = 8,160.05

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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.