Home / 11,121.30-16,683.98-5,277.86

Finding the Fourth Proportional to 11,121.30, 16,683.98 and 5,277.86

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Solution

The fourth proportional to 11,121.30, 16,683.98 and 5,277.86 is: 7,917.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.30 : 16,683.98 = 5,277.86 : x
  2. Step 2: Convert to fraction form
    11,121.30/16,683.98 = 5,277.86/x
  3. Step 3: Cross multiply
    11,121.30x = 16,683.98 × 5,277.86
  4. Step 4: Simplify right side
    11,121.30x = 88,055,710.68
  5. Step 5: Solve for x
    x = 88,055,710.68/11,121.30
  6. Step 6: Final answer
    x = 7,917.75

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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.