Home / 12,325.20-18,489.60-4,003.80

Finding the Fourth Proportional to 12,325.20, 18,489.60 and 4,003.80

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Solution

The fourth proportional to 12,325.20, 18,489.60 and 4,003.80 is: 6,006.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.20 : 18,489.60 = 4,003.80 : x
  2. Step 2: Convert to fraction form
    12,325.20/18,489.60 = 4,003.80/x
  3. Step 3: Cross multiply
    12,325.20x = 18,489.60 × 4,003.80
  4. Step 4: Simplify right side
    12,325.20x = 74,028,660.48
  5. Step 5: Solve for x
    x = 74,028,660.48/12,325.20
  6. Step 6: Final answer
    x = 6,006.28

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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.