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Finding the Fourth Proportional to 18,704.69, 28,057 and 10,908.03

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Solution

The fourth proportional to 18,704.69, 28,057 and 10,908.03 is: 16,362.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.69 : 28,057 = 10,908.03 : x
  2. Step 2: Convert to fraction form
    18,704.69/28,057 = 10,908.03/x
  3. Step 3: Cross multiply
    18,704.69x = 28,057 × 10,908.03
  4. Step 4: Simplify right side
    18,704.69x = 306,046,597.71
  5. Step 5: Solve for x
    x = 306,046,597.71/18,704.69
  6. Step 6: Final answer
    x = 16,362.02

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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.