Home / 11,911.25-16,436.19-7,371.87

Finding the Fourth Proportional to 11,911.25, 16,436.19 and 7,371.87

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Solution

The fourth proportional to 11,911.25, 16,436.19 and 7,371.87 is: 10,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.25 : 16,436.19 = 7,371.87 : x
  2. Step 2: Convert to fraction form
    11,911.25/16,436.19 = 7,371.87/x
  3. Step 3: Cross multiply
    11,911.25x = 16,436.19 × 7,371.87
  4. Step 4: Simplify right side
    11,911.25x = 121,165,373.79
  5. Step 5: Solve for x
    x = 121,165,373.79/11,911.25
  6. Step 6: Final answer
    x = 10,172.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.