Home / 11,115.08-16,654.11-7,821.26

Finding the Fourth Proportional to 11,115.08, 16,654.11 and 7,821.26

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Solution

The fourth proportional to 11,115.08, 16,654.11 and 7,821.26 is: 11,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.08 : 16,654.11 = 7,821.26 : x
  2. Step 2: Convert to fraction form
    11,115.08/16,654.11 = 7,821.26/x
  3. Step 3: Cross multiply
    11,115.08x = 16,654.11 × 7,821.26
  4. Step 4: Simplify right side
    11,115.08x = 130,256,093.38
  5. Step 5: Solve for x
    x = 130,256,093.38/11,115.08
  6. Step 6: Final answer
    x = 11,718.86

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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.