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Finding the Fourth Proportional to 10,902.80, 16,354.20 and 2,694.80

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Solution

The fourth proportional to 10,902.80, 16,354.20 and 2,694.80 is: 4,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.80 : 16,354.20 = 2,694.80 : x
  2. Step 2: Convert to fraction form
    10,902.80/16,354.20 = 2,694.80/x
  3. Step 3: Cross multiply
    10,902.80x = 16,354.20 × 2,694.80
  4. Step 4: Simplify right side
    10,902.80x = 44,071,298.16
  5. Step 5: Solve for x
    x = 44,071,298.16/10,902.80
  6. Step 6: Final answer
    x = 4,042.20

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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.