Home / 11,121.12-16,682.40-3,330

Finding the Fourth Proportional to 11,121.12, 16,682.40 and 3,330

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Solution

The fourth proportional to 11,121.12, 16,682.40 and 3,330 is: 4,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.12 : 16,682.40 = 3,330 : x
  2. Step 2: Convert to fraction form
    11,121.12/16,682.40 = 3,330/x
  3. Step 3: Cross multiply
    11,121.12x = 16,682.40 × 3,330
  4. Step 4: Simplify right side
    11,121.12x = 55,552,392.00
  5. Step 5: Solve for x
    x = 55,552,392.00/11,121.12
  6. Step 6: Final answer
    x = 4,995.22

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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.