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Finding the Fourth Proportional to 12,372.30, 18,549.09 and 4,047.30

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Solution

The fourth proportional to 12,372.30, 18,549.09 and 4,047.30 is: 6,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.30 : 18,549.09 = 4,047.30 : x
  2. Step 2: Convert to fraction form
    12,372.30/18,549.09 = 4,047.30/x
  3. Step 3: Cross multiply
    12,372.30x = 18,549.09 × 4,047.30
  4. Step 4: Simplify right side
    12,372.30x = 75,073,731.96
  5. Step 5: Solve for x
    x = 75,073,731.96/12,372.30
  6. Step 6: Final answer
    x = 6,067.89

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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.