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Finding the Fourth Proportional to 17,791.80, 26,687.70 and 15,912.60

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Solution

The fourth proportional to 17,791.80, 26,687.70 and 15,912.60 is: 23,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,791.80 : 26,687.70 = 15,912.60 : x
  2. Step 2: Convert to fraction form
    17,791.80/26,687.70 = 15,912.60/x
  3. Step 3: Cross multiply
    17,791.80x = 26,687.70 × 15,912.60
  4. Step 4: Simplify right side
    17,791.80x = 424,670,695.02
  5. Step 5: Solve for x
    x = 424,670,695.02/17,791.80
  6. Step 6: Final answer
    x = 23,868.90

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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.