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Finding the Fourth Proportional to 18,447.87, 27,670.09 and 7,351.59

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Solution

The fourth proportional to 18,447.87, 27,670.09 and 7,351.59 is: 11,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.87 : 27,670.09 = 7,351.59 : x
  2. Step 2: Convert to fraction form
    18,447.87/27,670.09 = 7,351.59/x
  3. Step 3: Cross multiply
    18,447.87x = 27,670.09 × 7,351.59
  4. Step 4: Simplify right side
    18,447.87x = 203,419,156.94
  5. Step 5: Solve for x
    x = 203,419,156.94/18,447.87
  6. Step 6: Final answer
    x = 11,026.70

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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.