Home / 11,920.26-17,876.34-4,127.25

Finding the Fourth Proportional to 11,920.26, 17,876.34 and 4,127.25

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Solution

The fourth proportional to 11,920.26, 17,876.34 and 4,127.25 is: 6,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.26 : 17,876.34 = 4,127.25 : x
  2. Step 2: Convert to fraction form
    11,920.26/17,876.34 = 4,127.25/x
  3. Step 3: Cross multiply
    11,920.26x = 17,876.34 × 4,127.25
  4. Step 4: Simplify right side
    11,920.26x = 73,780,124.27
  5. Step 5: Solve for x
    x = 73,780,124.27/11,920.26
  6. Step 6: Final answer
    x = 6,189.47

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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.