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Finding the Fourth Proportional to 18,694.68, 28,046.88 and 7,008

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Solution

The fourth proportional to 18,694.68, 28,046.88 and 7,008 is: 10,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.68 : 28,046.88 = 7,008 : x
  2. Step 2: Convert to fraction form
    18,694.68/28,046.88 = 7,008/x
  3. Step 3: Cross multiply
    18,694.68x = 28,046.88 × 7,008
  4. Step 4: Simplify right side
    18,694.68x = 196,552,535.04
  5. Step 5: Solve for x
    x = 196,552,535.04/18,694.68
  6. Step 6: Final answer
    x = 10,513.82

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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.