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Finding the Fourth Proportional to 13,169.76, 19,755 and 4,404.36

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Solution

The fourth proportional to 13,169.76, 19,755 and 4,404.36 is: 6,606.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.76 : 19,755 = 4,404.36 : x
  2. Step 2: Convert to fraction form
    13,169.76/19,755 = 4,404.36/x
  3. Step 3: Cross multiply
    13,169.76x = 19,755 × 4,404.36
  4. Step 4: Simplify right side
    13,169.76x = 87,008,131.80
  5. Step 5: Solve for x
    x = 87,008,131.80/13,169.76
  6. Step 6: Final answer
    x = 6,606.66

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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.