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Finding the Fourth Proportional to 18,640.56, 27,953.40 and 9,273.72

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Solution

The fourth proportional to 18,640.56, 27,953.40 and 9,273.72 is: 13,906.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.56 : 27,953.40 = 9,273.72 : x
  2. Step 2: Convert to fraction form
    18,640.56/27,953.40 = 9,273.72/x
  3. Step 3: Cross multiply
    18,640.56x = 27,953.40 × 9,273.72
  4. Step 4: Simplify right side
    18,640.56x = 259,232,004.65
  5. Step 5: Solve for x
    x = 259,232,004.65/18,640.56
  6. Step 6: Final answer
    x = 13,906.88

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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.