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Finding the Fourth Proportional to 17,959.20, 26,940.20 and 4,811.44

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Solution

The fourth proportional to 17,959.20, 26,940.20 and 4,811.44 is: 7,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,959.20 : 26,940.20 = 4,811.44 : x
  2. Step 2: Convert to fraction form
    17,959.20/26,940.20 = 4,811.44/x
  3. Step 3: Cross multiply
    17,959.20x = 26,940.20 × 4,811.44
  4. Step 4: Simplify right side
    17,959.20x = 129,621,155.89
  5. Step 5: Solve for x
    x = 129,621,155.89/17,959.20
  6. Step 6: Final answer
    x = 7,217.54

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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.