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Finding the Fourth Proportional to 20,179.92, 30,269.88 and 6,330

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Solution

The fourth proportional to 20,179.92, 30,269.88 and 6,330 is: 9,495.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.92 : 30,269.88 = 6,330 : x
  2. Step 2: Convert to fraction form
    20,179.92/30,269.88 = 6,330/x
  3. Step 3: Cross multiply
    20,179.92x = 30,269.88 × 6,330
  4. Step 4: Simplify right side
    20,179.92x = 191,608,340.40
  5. Step 5: Solve for x
    x = 191,608,340.40/20,179.92
  6. Step 6: Final answer
    x = 9,495.00

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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.