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Finding the Fourth Proportional to 25,863.87, 38,795.03 and 7,145.03

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Solution

The fourth proportional to 25,863.87, 38,795.03 and 7,145.03 is: 10,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,863.87 : 38,795.03 = 7,145.03 : x
  2. Step 2: Convert to fraction form
    25,863.87/38,795.03 = 7,145.03/x
  3. Step 3: Cross multiply
    25,863.87x = 38,795.03 × 7,145.03
  4. Step 4: Simplify right side
    25,863.87x = 277,191,538.35
  5. Step 5: Solve for x
    x = 277,191,538.35/25,863.87
  6. Step 6: Final answer
    x = 10,717.33

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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.