Home / 11,903.91-17,864.08-4,112.72

Finding the Fourth Proportional to 11,903.91, 17,864.08 and 4,112.72

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Solution

The fourth proportional to 11,903.91, 17,864.08 and 4,112.72 is: 6,171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.91 : 17,864.08 = 4,112.72 : x
  2. Step 2: Convert to fraction form
    11,903.91/17,864.08 = 4,112.72/x
  3. Step 3: Cross multiply
    11,903.91x = 17,864.08 × 4,112.72
  4. Step 4: Simplify right side
    11,903.91x = 73,469,959.10
  5. Step 5: Solve for x
    x = 73,469,959.10/11,903.91
  6. Step 6: Final answer
    x = 6,171.92

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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.