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Finding the Fourth Proportional to 17,940.20, 26,906.70 and 8,580.20

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Solution

The fourth proportional to 17,940.20, 26,906.70 and 8,580.20 is: 12,868.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,940.20 : 26,906.70 = 8,580.20 : x
  2. Step 2: Convert to fraction form
    17,940.20/26,906.70 = 8,580.20/x
  3. Step 3: Cross multiply
    17,940.20x = 26,906.70 × 8,580.20
  4. Step 4: Simplify right side
    17,940.20x = 230,864,867.34
  5. Step 5: Solve for x
    x = 230,864,867.34/17,940.20
  6. Step 6: Final answer
    x = 12,868.58

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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.