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Finding the Fourth Proportional to 10,791.78, 16,153.83 and 7,440.36

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Solution

The fourth proportional to 10,791.78, 16,153.83 and 7,440.36 is: 11,137.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.78 : 16,153.83 = 7,440.36 : x
  2. Step 2: Convert to fraction form
    10,791.78/16,153.83 = 7,440.36/x
  3. Step 3: Cross multiply
    10,791.78x = 16,153.83 × 7,440.36
  4. Step 4: Simplify right side
    10,791.78x = 120,190,310.58
  5. Step 5: Solve for x
    x = 120,190,310.58/10,791.78
  6. Step 6: Final answer
    x = 11,137.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.