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Finding the Fourth Proportional to 18,988.96, 28,481.52 and 6,676

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Solution

The fourth proportional to 18,988.96, 28,481.52 and 6,676 is: 10,013.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.96 : 28,481.52 = 6,676 : x
  2. Step 2: Convert to fraction form
    18,988.96/28,481.52 = 6,676/x
  3. Step 3: Cross multiply
    18,988.96x = 28,481.52 × 6,676
  4. Step 4: Simplify right side
    18,988.96x = 190,142,627.52
  5. Step 5: Solve for x
    x = 190,142,627.52/18,988.96
  6. Step 6: Final answer
    x = 10,013.32

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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.