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Finding the Fourth Proportional to 13,881.44, 20,822.42 and 6,483.88

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Solution

The fourth proportional to 13,881.44, 20,822.42 and 6,483.88 is: 9,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.44 : 20,822.42 = 6,483.88 : x
  2. Step 2: Convert to fraction form
    13,881.44/20,822.42 = 6,483.88/x
  3. Step 3: Cross multiply
    13,881.44x = 20,822.42 × 6,483.88
  4. Step 4: Simplify right side
    13,881.44x = 135,010,072.59
  5. Step 5: Solve for x
    x = 135,010,072.59/13,881.44
  6. Step 6: Final answer
    x = 9,725.94

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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.