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Finding the Fourth Proportional to 12,375.44, 17,078.64 and 7,070.66

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Solution

The fourth proportional to 12,375.44, 17,078.64 and 7,070.66 is: 9,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.44 : 17,078.64 = 7,070.66 : x
  2. Step 2: Convert to fraction form
    12,375.44/17,078.64 = 7,070.66/x
  3. Step 3: Cross multiply
    12,375.44x = 17,078.64 × 7,070.66
  4. Step 4: Simplify right side
    12,375.44x = 120,757,256.70
  5. Step 5: Solve for x
    x = 120,757,256.70/12,375.44
  6. Step 6: Final answer
    x = 9,757.82

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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.