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Finding the Fourth Proportional to 18,487.25, 27,711.02 and 6,629.61

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Solution

The fourth proportional to 18,487.25, 27,711.02 and 6,629.61 is: 9,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.25 : 27,711.02 = 6,629.61 : x
  2. Step 2: Convert to fraction form
    18,487.25/27,711.02 = 6,629.61/x
  3. Step 3: Cross multiply
    18,487.25x = 27,711.02 × 6,629.61
  4. Step 4: Simplify right side
    18,487.25x = 183,713,222.15
  5. Step 5: Solve for x
    x = 183,713,222.15/18,487.25
  6. Step 6: Final answer
    x = 9,937.30

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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.