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Finding the Fourth Proportional to 10,328.80, 15,496.80 and 3,755.20

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Solution

The fourth proportional to 10,328.80, 15,496.80 and 3,755.20 is: 5,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,328.80 : 15,496.80 = 3,755.20 : x
  2. Step 2: Convert to fraction form
    10,328.80/15,496.80 = 3,755.20/x
  3. Step 3: Cross multiply
    10,328.80x = 15,496.80 × 3,755.20
  4. Step 4: Simplify right side
    10,328.80x = 58,193,583.36
  5. Step 5: Solve for x
    x = 58,193,583.36/10,328.80
  6. Step 6: Final answer
    x = 5,634.11

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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.