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Finding the Fourth Proportional to 19,644, 29,454.22 and 13,326.64

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Solution

The fourth proportional to 19,644, 29,454.22 and 13,326.64 is: 19,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644 : 29,454.22 = 13,326.64 : x
  2. Step 2: Convert to fraction form
    19,644/29,454.22 = 13,326.64/x
  3. Step 3: Cross multiply
    19,644x = 29,454.22 × 13,326.64
  4. Step 4: Simplify right side
    19,644x = 392,525,786.42
  5. Step 5: Solve for x
    x = 392,525,786.42/19,644
  6. Step 6: Final answer
    x = 19,981.97

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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.