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Finding the Fourth Proportional to 25,912.91, 38,865.48 and 7,190.97

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Solution

The fourth proportional to 25,912.91, 38,865.48 and 7,190.97 is: 10,785.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,912.91 : 38,865.48 = 7,190.97 : x
  2. Step 2: Convert to fraction form
    25,912.91/38,865.48 = 7,190.97/x
  3. Step 3: Cross multiply
    25,912.91x = 38,865.48 × 7,190.97
  4. Step 4: Simplify right side
    25,912.91x = 279,480,500.72
  5. Step 5: Solve for x
    x = 279,480,500.72/25,912.91
  6. Step 6: Final answer
    x = 10,785.38

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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.