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Finding the Fourth Proportional to 12,845.91, 17,713.35 and 8,361.39

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Solution

The fourth proportional to 12,845.91, 17,713.35 and 8,361.39 is: 11,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.91 : 17,713.35 = 8,361.39 : x
  2. Step 2: Convert to fraction form
    12,845.91/17,713.35 = 8,361.39/x
  3. Step 3: Cross multiply
    12,845.91x = 17,713.35 × 8,361.39
  4. Step 4: Simplify right side
    12,845.91x = 148,108,227.56
  5. Step 5: Solve for x
    x = 148,108,227.56/12,845.91
  6. Step 6: Final answer
    x = 11,529.60

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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.