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Finding the Fourth Proportional to 25,640.94, 35,385.85 and 15,034

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Solution

The fourth proportional to 25,640.94, 35,385.85 and 15,034 is: 20,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.94 : 35,385.85 = 15,034 : x
  2. Step 2: Convert to fraction form
    25,640.94/35,385.85 = 15,034/x
  3. Step 3: Cross multiply
    25,640.94x = 35,385.85 × 15,034
  4. Step 4: Simplify right side
    25,640.94x = 531,990,868.90
  5. Step 5: Solve for x
    x = 531,990,868.90/25,640.94
  6. Step 6: Final answer
    x = 20,747.71

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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.