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Finding the Fourth Proportional to 25,612, 38,424.48 and 7,144

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Solution

The fourth proportional to 25,612, 38,424.48 and 7,144 is: 10,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,612 : 38,424.48 = 7,144 : x
  2. Step 2: Convert to fraction form
    25,612/38,424.48 = 7,144/x
  3. Step 3: Cross multiply
    25,612x = 38,424.48 × 7,144
  4. Step 4: Simplify right side
    25,612x = 274,504,485.12
  5. Step 5: Solve for x
    x = 274,504,485.12/25,612
  6. Step 6: Final answer
    x = 10,717.81

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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.