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Finding the Fourth Proportional to 11,131.75, 15,361.86 and 6,163.75

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Solution

The fourth proportional to 11,131.75, 15,361.86 and 6,163.75 is: 8,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.75 : 15,361.86 = 6,163.75 : x
  2. Step 2: Convert to fraction form
    11,131.75/15,361.86 = 6,163.75/x
  3. Step 3: Cross multiply
    11,131.75x = 15,361.86 × 6,163.75
  4. Step 4: Simplify right side
    11,131.75x = 94,686,664.58
  5. Step 5: Solve for x
    x = 94,686,664.58/11,131.75
  6. Step 6: Final answer
    x = 8,506.00

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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.