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Finding the Fourth Proportional to 18,816, 28,236.99 and 6,504

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Solution

The fourth proportional to 18,816, 28,236.99 and 6,504 is: 9,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816 : 28,236.99 = 6,504 : x
  2. Step 2: Convert to fraction form
    18,816/28,236.99 = 6,504/x
  3. Step 3: Cross multiply
    18,816x = 28,236.99 × 6,504
  4. Step 4: Simplify right side
    18,816x = 183,653,382.96
  5. Step 5: Solve for x
    x = 183,653,382.96/18,816
  6. Step 6: Final answer
    x = 9,760.49

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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.