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Finding the Fourth Proportional to 17,881.38, 26,801.15 and 11,951.10

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Solution

The fourth proportional to 17,881.38, 26,801.15 and 11,951.10 is: 17,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.38 : 26,801.15 = 11,951.10 : x
  2. Step 2: Convert to fraction form
    17,881.38/26,801.15 = 11,951.10/x
  3. Step 3: Cross multiply
    17,881.38x = 26,801.15 × 11,951.10
  4. Step 4: Simplify right side
    17,881.38x = 320,303,164.01
  5. Step 5: Solve for x
    x = 320,303,164.01/17,881.38
  6. Step 6: Final answer
    x = 17,912.66

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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.