Home / 11,108.92-16,661.70-3,318.40

Finding the Fourth Proportional to 11,108.92, 16,661.70 and 3,318.40

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Solution

The fourth proportional to 11,108.92, 16,661.70 and 3,318.40 is: 4,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.92 : 16,661.70 = 3,318.40 : x
  2. Step 2: Convert to fraction form
    11,108.92/16,661.70 = 3,318.40/x
  3. Step 3: Cross multiply
    11,108.92x = 16,661.70 × 3,318.40
  4. Step 4: Simplify right side
    11,108.92x = 55,290,185.28
  5. Step 5: Solve for x
    x = 55,290,185.28/11,108.92
  6. Step 6: Final answer
    x = 4,977.10

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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.