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Finding the Fourth Proportional to 18,794, 28,171.80 and 8,934.32

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Solution

The fourth proportional to 18,794, 28,171.80 and 8,934.32 is: 13,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794 : 28,171.80 = 8,934.32 : x
  2. Step 2: Convert to fraction form
    18,794/28,171.80 = 8,934.32/x
  3. Step 3: Cross multiply
    18,794x = 28,171.80 × 8,934.32
  4. Step 4: Simplify right side
    18,794x = 251,695,876.18
  5. Step 5: Solve for x
    x = 251,695,876.18/18,794
  6. Step 6: Final answer
    x = 13,392.35

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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.