Home / 12,138.62-18,240.87-6,596.06

Finding the Fourth Proportional to 12,138.62, 18,240.87 and 6,596.06

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Solution

The fourth proportional to 12,138.62, 18,240.87 and 6,596.06 is: 9,911.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.62 : 18,240.87 = 6,596.06 : x
  2. Step 2: Convert to fraction form
    12,138.62/18,240.87 = 6,596.06/x
  3. Step 3: Cross multiply
    12,138.62x = 18,240.87 × 6,596.06
  4. Step 4: Simplify right side
    12,138.62x = 120,317,872.97
  5. Step 5: Solve for x
    x = 120,317,872.97/12,138.62
  6. Step 6: Final answer
    x = 9,911.99

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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.