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Finding the Fourth Proportional to 19,884.66, 29,822.37 and 8,785.29

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Solution

The fourth proportional to 19,884.66, 29,822.37 and 8,785.29 is: 13,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.66 : 29,822.37 = 8,785.29 : x
  2. Step 2: Convert to fraction form
    19,884.66/29,822.37 = 8,785.29/x
  3. Step 3: Cross multiply
    19,884.66x = 29,822.37 × 8,785.29
  4. Step 4: Simplify right side
    19,884.66x = 261,998,168.94
  5. Step 5: Solve for x
    x = 261,998,168.94/19,884.66
  6. Step 6: Final answer
    x = 13,175.89

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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.