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Finding the Fourth Proportional to 18,048.12, 27,049.08 and 7,645.56

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Solution

The fourth proportional to 18,048.12, 27,049.08 and 7,645.56 is: 11,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,048.12 : 27,049.08 = 7,645.56 : x
  2. Step 2: Convert to fraction form
    18,048.12/27,049.08 = 7,645.56/x
  3. Step 3: Cross multiply
    18,048.12x = 27,049.08 × 7,645.56
  4. Step 4: Simplify right side
    18,048.12x = 206,805,364.08
  5. Step 5: Solve for x
    x = 206,805,364.08/18,048.12
  6. Step 6: Final answer
    x = 11,458.55

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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.