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Finding the Fourth Proportional to 18,408.50, 25,404 and 10,025

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Solution

The fourth proportional to 18,408.50, 25,404 and 10,025 is: 13,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.50 : 25,404 = 10,025 : x
  2. Step 2: Convert to fraction form
    18,408.50/25,404 = 10,025/x
  3. Step 3: Cross multiply
    18,408.50x = 25,404 × 10,025
  4. Step 4: Simplify right side
    18,408.50x = 254,675,100
  5. Step 5: Solve for x
    x = 254,675,100/18,408.50
  6. Step 6: Final answer
    x = 13,834.65

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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.