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Finding the Fourth Proportional to 10,750.78, 16,127.15 and 3,355.22

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Solution

The fourth proportional to 10,750.78, 16,127.15 and 3,355.22 is: 5,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,750.78 : 16,127.15 = 3,355.22 : x
  2. Step 2: Convert to fraction form
    10,750.78/16,127.15 = 3,355.22/x
  3. Step 3: Cross multiply
    10,750.78x = 16,127.15 × 3,355.22
  4. Step 4: Simplify right side
    10,750.78x = 54,110,178.64
  5. Step 5: Solve for x
    x = 54,110,178.64/10,750.78
  6. Step 6: Final answer
    x = 5,033.14

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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.