Home / 10,785.45-16,179.81-3,389.22

Finding the Fourth Proportional to 10,785.45, 16,179.81 and 3,389.22

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Solution

The fourth proportional to 10,785.45, 16,179.81 and 3,389.22 is: 5,084.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.45 : 16,179.81 = 3,389.22 : x
  2. Step 2: Convert to fraction form
    10,785.45/16,179.81 = 3,389.22/x
  3. Step 3: Cross multiply
    10,785.45x = 16,179.81 × 3,389.22
  4. Step 4: Simplify right side
    10,785.45x = 54,836,935.65
  5. Step 5: Solve for x
    x = 54,836,935.65/10,785.45
  6. Step 6: Final answer
    x = 5,084.34

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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.