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Finding the Fourth Proportional to 27,530.31, 37,974.03 and 18,912.39

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Solution

The fourth proportional to 27,530.31, 37,974.03 and 18,912.39 is: 26,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,530.31 : 37,974.03 = 18,912.39 : x
  2. Step 2: Convert to fraction form
    27,530.31/37,974.03 = 18,912.39/x
  3. Step 3: Cross multiply
    27,530.31x = 37,974.03 × 18,912.39
  4. Step 4: Simplify right side
    27,530.31x = 718,179,665.23
  5. Step 5: Solve for x
    x = 718,179,665.23/27,530.31
  6. Step 6: Final answer
    x = 26,086.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.