Home / 11,622.81-17,434.01-2,857.80

Finding the Fourth Proportional to 11,622.81, 17,434.01 and 2,857.80

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Solution

The fourth proportional to 11,622.81, 17,434.01 and 2,857.80 is: 4,286.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,622.81 : 17,434.01 = 2,857.80 : x
  2. Step 2: Convert to fraction form
    11,622.81/17,434.01 = 2,857.80/x
  3. Step 3: Cross multiply
    11,622.81x = 17,434.01 × 2,857.80
  4. Step 4: Simplify right side
    11,622.81x = 49,822,899.49
  5. Step 5: Solve for x
    x = 49,822,899.49/11,622.81
  6. Step 6: Final answer
    x = 4,286.65

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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.