Home / 11,690.28-16,132.82-6,385.91

Finding the Fourth Proportional to 11,690.28, 16,132.82 and 6,385.91

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Solution

The fourth proportional to 11,690.28, 16,132.82 and 6,385.91 is: 8,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.28 : 16,132.82 = 6,385.91 : x
  2. Step 2: Convert to fraction form
    11,690.28/16,132.82 = 6,385.91/x
  3. Step 3: Cross multiply
    11,690.28x = 16,132.82 × 6,385.91
  4. Step 4: Simplify right side
    11,690.28x = 103,022,623.97
  5. Step 5: Solve for x
    x = 103,022,623.97/11,690.28
  6. Step 6: Final answer
    x = 8,812.67

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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.