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Finding the Fourth Proportional to 13,727.53, 18,941.47 and 8,063.20

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Solution

The fourth proportional to 13,727.53, 18,941.47 and 8,063.20 is: 11,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.53 : 18,941.47 = 8,063.20 : x
  2. Step 2: Convert to fraction form
    13,727.53/18,941.47 = 8,063.20/x
  3. Step 3: Cross multiply
    13,727.53x = 18,941.47 × 8,063.20
  4. Step 4: Simplify right side
    13,727.53x = 152,728,780.55
  5. Step 5: Solve for x
    x = 152,728,780.55/13,727.53
  6. Step 6: Final answer
    x = 11,125.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.