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Finding the Fourth Proportional to 11,134.76, 15,351.81 and 7,951.87

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Solution

The fourth proportional to 11,134.76, 15,351.81 and 7,951.87 is: 10,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,134.76 : 15,351.81 = 7,951.87 : x
  2. Step 2: Convert to fraction form
    11,134.76/15,351.81 = 7,951.87/x
  3. Step 3: Cross multiply
    11,134.76x = 15,351.81 × 7,951.87
  4. Step 4: Simplify right side
    11,134.76x = 122,075,520.63
  5. Step 5: Solve for x
    x = 122,075,520.63/11,134.76
  6. Step 6: Final answer
    x = 10,963.46

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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.