Home / 12,380.70-18,571.97-3,615.86

Finding the Fourth Proportional to 12,380.70, 18,571.97 and 3,615.86

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Solution

The fourth proportional to 12,380.70, 18,571.97 and 3,615.86 is: 5,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.70 : 18,571.97 = 3,615.86 : x
  2. Step 2: Convert to fraction form
    12,380.70/18,571.97 = 3,615.86/x
  3. Step 3: Cross multiply
    12,380.70x = 18,571.97 × 3,615.86
  4. Step 4: Simplify right side
    12,380.70x = 67,153,643.44
  5. Step 5: Solve for x
    x = 67,153,643.44/12,380.70
  6. Step 6: Final answer
    x = 5,424.06

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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.