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Finding the Fourth Proportional to 13,896.77, 20,850.48 and 8,353.94

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Solution

The fourth proportional to 13,896.77, 20,850.48 and 8,353.94 is: 12,534.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.77 : 20,850.48 = 8,353.94 : x
  2. Step 2: Convert to fraction form
    13,896.77/20,850.48 = 8,353.94/x
  3. Step 3: Cross multiply
    13,896.77x = 20,850.48 × 8,353.94
  4. Step 4: Simplify right side
    13,896.77x = 174,183,554.64
  5. Step 5: Solve for x
    x = 174,183,554.64/13,896.77
  6. Step 6: Final answer
    x = 12,534.11

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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.