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Finding the Fourth Proportional to 17,959.78, 26,940.11 and 6,113.53

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Solution

The fourth proportional to 17,959.78, 26,940.11 and 6,113.53 is: 9,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,959.78 : 26,940.11 = 6,113.53 : x
  2. Step 2: Convert to fraction form
    17,959.78/26,940.11 = 6,113.53/x
  3. Step 3: Cross multiply
    17,959.78x = 26,940.11 × 6,113.53
  4. Step 4: Simplify right side
    17,959.78x = 164,699,170.69
  5. Step 5: Solve for x
    x = 164,699,170.69/17,959.78
  6. Step 6: Final answer
    x = 9,170.44

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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.