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Finding the Fourth Proportional to 13,658.88, 20,481.32 and 6,257.00

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Solution

The fourth proportional to 13,658.88, 20,481.32 and 6,257.00 is: 9,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.88 : 20,481.32 = 6,257.00 : x
  2. Step 2: Convert to fraction form
    13,658.88/20,481.32 = 6,257.00/x
  3. Step 3: Cross multiply
    13,658.88x = 20,481.32 × 6,257.00
  4. Step 4: Simplify right side
    13,658.88x = 128,151,485.55
  5. Step 5: Solve for x
    x = 128,151,485.55/13,658.88
  6. Step 6: Final answer
    x = 9,382.28

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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.