Home / 12,138.93-18,205.11-4,132.94

Finding the Fourth Proportional to 12,138.93, 18,205.11 and 4,132.94

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Solution

The fourth proportional to 12,138.93, 18,205.11 and 4,132.94 is: 6,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.93 : 18,205.11 = 4,132.94 : x
  2. Step 2: Convert to fraction form
    12,138.93/18,205.11 = 4,132.94/x
  3. Step 3: Cross multiply
    12,138.93x = 18,205.11 × 4,132.94
  4. Step 4: Simplify right side
    12,138.93x = 75,240,536.30
  5. Step 5: Solve for x
    x = 75,240,536.30/12,138.93
  6. Step 6: Final answer
    x = 6,198.28

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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.