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Finding the Fourth Proportional to 12,770.42, 17,610.90 and 8,295.44

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Solution

The fourth proportional to 12,770.42, 17,610.90 and 8,295.44 is: 11,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.42 : 17,610.90 = 8,295.44 : x
  2. Step 2: Convert to fraction form
    12,770.42/17,610.90 = 8,295.44/x
  3. Step 3: Cross multiply
    12,770.42x = 17,610.90 × 8,295.44
  4. Step 4: Simplify right side
    12,770.42x = 146,090,164.30
  5. Step 5: Solve for x
    x = 146,090,164.30/12,770.42
  6. Step 6: Final answer
    x = 11,439.73

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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.