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Finding the Fourth Proportional to 17,899.86, 26,855.26 and 6,221.28

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Solution

The fourth proportional to 17,899.86, 26,855.26 and 6,221.28 is: 9,333.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,899.86 : 26,855.26 = 6,221.28 : x
  2. Step 2: Convert to fraction form
    17,899.86/26,855.26 = 6,221.28/x
  3. Step 3: Cross multiply
    17,899.86x = 26,855.26 × 6,221.28
  4. Step 4: Simplify right side
    17,899.86x = 167,074,076.38
  5. Step 5: Solve for x
    x = 167,074,076.38/17,899.86
  6. Step 6: Final answer
    x = 9,333.82

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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.