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Finding the Fourth Proportional to 11,138.52, 15,373.32 and 7,361.88

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Solution

The fourth proportional to 11,138.52, 15,373.32 and 7,361.88 is: 10,160.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.52 : 15,373.32 = 7,361.88 : x
  2. Step 2: Convert to fraction form
    11,138.52/15,373.32 = 7,361.88/x
  3. Step 3: Cross multiply
    11,138.52x = 15,373.32 × 7,361.88
  4. Step 4: Simplify right side
    11,138.52x = 113,176,537.04
  5. Step 5: Solve for x
    x = 113,176,537.04/11,138.52
  6. Step 6: Final answer
    x = 10,160.82

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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.