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Finding the Fourth Proportional to 19,334.97, 28,995.97 and 8,654.64

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Solution

The fourth proportional to 19,334.97, 28,995.97 and 8,654.64 is: 12,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,334.97 : 28,995.97 = 8,654.64 : x
  2. Step 2: Convert to fraction form
    19,334.97/28,995.97 = 8,654.64/x
  3. Step 3: Cross multiply
    19,334.97x = 28,995.97 × 8,654.64
  4. Step 4: Simplify right side
    19,334.97x = 250,949,681.80
  5. Step 5: Solve for x
    x = 250,949,681.80/19,334.97
  6. Step 6: Final answer
    x = 12,979.06

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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.