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Finding the Fourth Proportional to 13,896.98, 20,850.75 and 8,354.15

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Solution

The fourth proportional to 13,896.98, 20,850.75 and 8,354.15 is: 12,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.98 : 20,850.75 = 8,354.15 : x
  2. Step 2: Convert to fraction form
    13,896.98/20,850.75 = 8,354.15/x
  3. Step 3: Cross multiply
    13,896.98x = 20,850.75 × 8,354.15
  4. Step 4: Simplify right side
    13,896.98x = 174,190,188.86
  5. Step 5: Solve for x
    x = 174,190,188.86/13,896.98
  6. Step 6: Final answer
    x = 12,534.40

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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.