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Finding the Fourth Proportional to 19,162.87, 28,736.10 and 6,679.20

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Solution

The fourth proportional to 19,162.87, 28,736.10 and 6,679.20 is: 10,015.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,162.87 : 28,736.10 = 6,679.20 : x
  2. Step 2: Convert to fraction form
    19,162.87/28,736.10 = 6,679.20/x
  3. Step 3: Cross multiply
    19,162.87x = 28,736.10 × 6,679.20
  4. Step 4: Simplify right side
    19,162.87x = 191,934,279.40
  5. Step 5: Solve for x
    x = 191,934,279.40/19,162.87
  6. Step 6: Final answer
    x = 10,015.94

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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.