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Finding the Fourth Proportional to 12,791.44, 17,644 and 8,805.52

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Solution

The fourth proportional to 12,791.44, 17,644 and 8,805.52 is: 12,145.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.44 : 17,644 = 8,805.52 : x
  2. Step 2: Convert to fraction form
    12,791.44/17,644 = 8,805.52/x
  3. Step 3: Cross multiply
    12,791.44x = 17,644 × 8,805.52
  4. Step 4: Simplify right side
    12,791.44x = 155,364,594.88
  5. Step 5: Solve for x
    x = 155,364,594.88/12,791.44
  6. Step 6: Final answer
    x = 12,145.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.