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Finding the Fourth Proportional to 12,635.52, 18,945.17 and 5,245.08

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Solution

The fourth proportional to 12,635.52, 18,945.17 and 5,245.08 is: 7,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.52 : 18,945.17 = 5,245.08 : x
  2. Step 2: Convert to fraction form
    12,635.52/18,945.17 = 5,245.08/x
  3. Step 3: Cross multiply
    12,635.52x = 18,945.17 × 5,245.08
  4. Step 4: Simplify right side
    12,635.52x = 99,368,932.26
  5. Step 5: Solve for x
    x = 99,368,932.26/12,635.52
  6. Step 6: Final answer
    x = 7,864.25

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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.