Home / 12,262.45-18,393.57-8,120.99

Finding the Fourth Proportional to 12,262.45, 18,393.57 and 8,120.99

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Solution

The fourth proportional to 12,262.45, 18,393.57 and 8,120.99 is: 12,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,262.45 : 18,393.57 = 8,120.99 : x
  2. Step 2: Convert to fraction form
    12,262.45/18,393.57 = 8,120.99/x
  3. Step 3: Cross multiply
    12,262.45x = 18,393.57 × 8,120.99
  4. Step 4: Simplify right side
    12,262.45x = 149,373,998.03
  5. Step 5: Solve for x
    x = 149,373,998.03/12,262.45
  6. Step 6: Final answer
    x = 12,181.42

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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.