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Finding the Fourth Proportional to 13,941.12, 20,892.22 and 7,704.12

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Solution

The fourth proportional to 13,941.12, 20,892.22 and 7,704.12 is: 11,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.12 : 20,892.22 = 7,704.12 : x
  2. Step 2: Convert to fraction form
    13,941.12/20,892.22 = 7,704.12/x
  3. Step 3: Cross multiply
    13,941.12x = 20,892.22 × 7,704.12
  4. Step 4: Simplify right side
    13,941.12x = 160,956,169.95
  5. Step 5: Solve for x
    x = 160,956,169.95/13,941.12
  6. Step 6: Final answer
    x = 11,545.43

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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.