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Finding the Fourth Proportional to 12,757.80, 19,231.32 and 11,650.44

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Solution

The fourth proportional to 12,757.80, 19,231.32 and 11,650.44 is: 17,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.80 : 19,231.32 = 11,650.44 : x
  2. Step 2: Convert to fraction form
    12,757.80/19,231.32 = 11,650.44/x
  3. Step 3: Cross multiply
    12,757.80x = 19,231.32 × 11,650.44
  4. Step 4: Simplify right side
    12,757.80x = 224,053,339.78
  5. Step 5: Solve for x
    x = 224,053,339.78/12,757.80
  6. Step 6: Final answer
    x = 17,562.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.