Home / 11,247.78-15,521.61-6,211.92

Finding the Fourth Proportional to 11,247.78, 15,521.61 and 6,211.92

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Solution

The fourth proportional to 11,247.78, 15,521.61 and 6,211.92 is: 8,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.78 : 15,521.61 = 6,211.92 : x
  2. Step 2: Convert to fraction form
    11,247.78/15,521.61 = 6,211.92/x
  3. Step 3: Cross multiply
    11,247.78x = 15,521.61 × 6,211.92
  4. Step 4: Simplify right side
    11,247.78x = 96,418,999.59
  5. Step 5: Solve for x
    x = 96,418,999.59/11,247.78
  6. Step 6: Final answer
    x = 8,572.27

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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.