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Finding the Fourth Proportional to 18,694.08, 28,041.12 and 6,382.08

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Solution

The fourth proportional to 18,694.08, 28,041.12 and 6,382.08 is: 9,573.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.08 : 28,041.12 = 6,382.08 : x
  2. Step 2: Convert to fraction form
    18,694.08/28,041.12 = 6,382.08/x
  3. Step 3: Cross multiply
    18,694.08x = 28,041.12 × 6,382.08
  4. Step 4: Simplify right side
    18,694.08x = 178,960,671.13
  5. Step 5: Solve for x
    x = 178,960,671.13/18,694.08
  6. Step 6: Final answer
    x = 9,573.12

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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.