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Finding the Fourth Proportional to 13,755.30, 20,635.82 and 6,255.30

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Solution

The fourth proportional to 13,755.30, 20,635.82 and 6,255.30 is: 9,384.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.30 : 20,635.82 = 6,255.30 : x
  2. Step 2: Convert to fraction form
    13,755.30/20,635.82 = 6,255.30/x
  3. Step 3: Cross multiply
    13,755.30x = 20,635.82 × 6,255.30
  4. Step 4: Simplify right side
    13,755.30x = 129,083,244.85
  5. Step 5: Solve for x
    x = 129,083,244.85/13,755.30
  6. Step 6: Final answer
    x = 9,384.26

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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.