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Finding the Fourth Proportional to 18,727.08, 28,093.86 and 5,578.08

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Solution

The fourth proportional to 18,727.08, 28,093.86 and 5,578.08 is: 8,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.08 : 28,093.86 = 5,578.08 : x
  2. Step 2: Convert to fraction form
    18,727.08/28,093.86 = 5,578.08/x
  3. Step 3: Cross multiply
    18,727.08x = 28,093.86 × 5,578.08
  4. Step 4: Simplify right side
    18,727.08x = 156,709,798.59
  5. Step 5: Solve for x
    x = 156,709,798.59/18,727.08
  6. Step 6: Final answer
    x = 8,368.09

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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.