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Finding the Fourth Proportional to 17,989.83, 26,984.43 and 8,126.46

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Solution

The fourth proportional to 17,989.83, 26,984.43 and 8,126.46 is: 12,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.83 : 26,984.43 = 8,126.46 : x
  2. Step 2: Convert to fraction form
    17,989.83/26,984.43 = 8,126.46/x
  3. Step 3: Cross multiply
    17,989.83x = 26,984.43 × 8,126.46
  4. Step 4: Simplify right side
    17,989.83x = 219,287,891.02
  5. Step 5: Solve for x
    x = 219,287,891.02/17,989.83
  6. Step 6: Final answer
    x = 12,189.55

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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.