Home / 11,126.16-16,689-5,121.48

Finding the Fourth Proportional to 11,126.16, 16,689 and 5,121.48

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Solution

The fourth proportional to 11,126.16, 16,689 and 5,121.48 is: 7,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.16 : 16,689 = 5,121.48 : x
  2. Step 2: Convert to fraction form
    11,126.16/16,689 = 5,121.48/x
  3. Step 3: Cross multiply
    11,126.16x = 16,689 × 5,121.48
  4. Step 4: Simplify right side
    11,126.16x = 85,472,379.72
  5. Step 5: Solve for x
    x = 85,472,379.72/11,126.16
  6. Step 6: Final answer
    x = 7,682.11

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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.