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Finding the Fourth Proportional to 18,447.70, 27,684.85 and 7,347.97

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Solution

The fourth proportional to 18,447.70, 27,684.85 and 7,347.97 is: 11,027.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.70 : 27,684.85 = 7,347.97 : x
  2. Step 2: Convert to fraction form
    18,447.70/27,684.85 = 7,347.97/x
  3. Step 3: Cross multiply
    18,447.70x = 27,684.85 × 7,347.97
  4. Step 4: Simplify right side
    18,447.70x = 203,427,272.09
  5. Step 5: Solve for x
    x = 203,427,272.09/18,447.70
  6. Step 6: Final answer
    x = 11,027.24

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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.