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Finding the Fourth Proportional to 25,861.87, 38,791.99 and 7,143.04

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Solution

The fourth proportional to 25,861.87, 38,791.99 and 7,143.04 is: 10,714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,861.87 : 38,791.99 = 7,143.04 : x
  2. Step 2: Convert to fraction form
    25,861.87/38,791.99 = 7,143.04/x
  3. Step 3: Cross multiply
    25,861.87x = 38,791.99 × 7,143.04
  4. Step 4: Simplify right side
    25,861.87x = 277,092,506.57
  5. Step 5: Solve for x
    x = 277,092,506.57/25,861.87
  6. Step 6: Final answer
    x = 10,714.33

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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.