Home / 8,003.20-12,018.30-6,685.60

Finding the Fourth Proportional to 8,003.20, 12,018.30 and 6,685.60

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Solution

The fourth proportional to 8,003.20, 12,018.30 and 6,685.60 is: 10,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,003.20 : 12,018.30 = 6,685.60 : x
  2. Step 2: Convert to fraction form
    8,003.20/12,018.30 = 6,685.60/x
  3. Step 3: Cross multiply
    8,003.20x = 12,018.30 × 6,685.60
  4. Step 4: Simplify right side
    8,003.20x = 80,349,546.48
  5. Step 5: Solve for x
    x = 80,349,546.48/8,003.20
  6. Step 6: Final answer
    x = 10,039.68

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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.