Home / 13,440.22-20,153.79-4,078.54

Finding the Fourth Proportional to 13,440.22, 20,153.79 and 4,078.54

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Solution

The fourth proportional to 13,440.22, 20,153.79 and 4,078.54 is: 6,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.22 : 20,153.79 = 4,078.54 : x
  2. Step 2: Convert to fraction form
    13,440.22/20,153.79 = 4,078.54/x
  3. Step 3: Cross multiply
    13,440.22x = 20,153.79 × 4,078.54
  4. Step 4: Simplify right side
    13,440.22x = 82,198,038.67
  5. Step 5: Solve for x
    x = 82,198,038.67/13,440.22
  6. Step 6: Final answer
    x = 6,115.83

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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.