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Finding the Fourth Proportional to 19,189, 28,796.55 and 6,877

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Solution

The fourth proportional to 19,189, 28,796.55 and 6,877 is: 10,320.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189 : 28,796.55 = 6,877 : x
  2. Step 2: Convert to fraction form
    19,189/28,796.55 = 6,877/x
  3. Step 3: Cross multiply
    19,189x = 28,796.55 × 6,877
  4. Step 4: Simplify right side
    19,189x = 198,033,874.35
  5. Step 5: Solve for x
    x = 198,033,874.35/19,189
  6. Step 6: Final answer
    x = 10,320.18

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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.