Home / 11,188.28-16,782.93-7,916

Finding the Fourth Proportional to 11,188.28, 16,782.93 and 7,916

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Solution

The fourth proportional to 11,188.28, 16,782.93 and 7,916 is: 11,874.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.28 : 16,782.93 = 7,916 : x
  2. Step 2: Convert to fraction form
    11,188.28/16,782.93 = 7,916/x
  3. Step 3: Cross multiply
    11,188.28x = 16,782.93 × 7,916
  4. Step 4: Simplify right side
    11,188.28x = 132,853,673.88
  5. Step 5: Solve for x
    x = 132,853,673.88/11,188.28
  6. Step 6: Final answer
    x = 11,874.36

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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.