Home / 14,138.78-21,212.41-8,522.54

Finding the Fourth Proportional to 14,138.78, 21,212.41 and 8,522.54

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Solution

The fourth proportional to 14,138.78, 21,212.41 and 8,522.54 is: 12,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.78 : 21,212.41 = 8,522.54 : x
  2. Step 2: Convert to fraction form
    14,138.78/21,212.41 = 8,522.54/x
  3. Step 3: Cross multiply
    14,138.78x = 21,212.41 × 8,522.54
  4. Step 4: Simplify right side
    14,138.78x = 180,783,612.72
  5. Step 5: Solve for x
    x = 180,783,612.72/14,138.78
  6. Step 6: Final answer
    x = 12,786.37

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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.