Home / 11,105.12-16,660.20-3,313.64

Finding the Fourth Proportional to 11,105.12, 16,660.20 and 3,313.64

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Solution

The fourth proportional to 11,105.12, 16,660.20 and 3,313.64 is: 4,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.12 : 16,660.20 = 3,313.64 : x
  2. Step 2: Convert to fraction form
    11,105.12/16,660.20 = 3,313.64/x
  3. Step 3: Cross multiply
    11,105.12x = 16,660.20 × 3,313.64
  4. Step 4: Simplify right side
    11,105.12x = 55,205,905.13
  5. Step 5: Solve for x
    x = 55,205,905.13/11,105.12
  6. Step 6: Final answer
    x = 4,971.21

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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.