Home / 10,996.20-16,505.10-5,455.80

Finding the Fourth Proportional to 10,996.20, 16,505.10 and 5,455.80

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Solution

The fourth proportional to 10,996.20, 16,505.10 and 5,455.80 is: 8,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,996.20 : 16,505.10 = 5,455.80 : x
  2. Step 2: Convert to fraction form
    10,996.20/16,505.10 = 5,455.80/x
  3. Step 3: Cross multiply
    10,996.20x = 16,505.10 × 5,455.80
  4. Step 4: Simplify right side
    10,996.20x = 90,048,524.58
  5. Step 5: Solve for x
    x = 90,048,524.58/10,996.20
  6. Step 6: Final answer
    x = 8,189.06

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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.