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Finding the Fourth Proportional to 17,914.43, 26,872.20 and 8,555.45

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Solution

The fourth proportional to 17,914.43, 26,872.20 and 8,555.45 is: 12,833.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,914.43 : 26,872.20 = 8,555.45 : x
  2. Step 2: Convert to fraction form
    17,914.43/26,872.20 = 8,555.45/x
  3. Step 3: Cross multiply
    17,914.43x = 26,872.20 × 8,555.45
  4. Step 4: Simplify right side
    17,914.43x = 229,903,629.13
  5. Step 5: Solve for x
    x = 229,903,629.13/17,914.43
  6. Step 6: Final answer
    x = 12,833.43

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1.5x scale

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.