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Finding the Fourth Proportional to 13,900.12, 20,850.18 and 8,094.04

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Solution

The fourth proportional to 13,900.12, 20,850.18 and 8,094.04 is: 12,141.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.12 : 20,850.18 = 8,094.04 : x
  2. Step 2: Convert to fraction form
    13,900.12/20,850.18 = 8,094.04/x
  3. Step 3: Cross multiply
    13,900.12x = 20,850.18 × 8,094.04
  4. Step 4: Simplify right side
    13,900.12x = 168,762,190.93
  5. Step 5: Solve for x
    x = 168,762,190.93/13,900.12
  6. Step 6: Final answer
    x = 12,141.06

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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.