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Finding the Fourth Proportional to 18,245.30, 27,302.85 and 13,253.49

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Solution

The fourth proportional to 18,245.30, 27,302.85 and 13,253.49 is: 19,832.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.30 : 27,302.85 = 13,253.49 : x
  2. Step 2: Convert to fraction form
    18,245.30/27,302.85 = 13,253.49/x
  3. Step 3: Cross multiply
    18,245.30x = 27,302.85 × 13,253.49
  4. Step 4: Simplify right side
    18,245.30x = 361,858,049.45
  5. Step 5: Solve for x
    x = 361,858,049.45/18,245.30
  6. Step 6: Final answer
    x = 19,832.95

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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.