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Finding the Fourth Proportional to 12,003.66, 18,004.20 and 3,239.46

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Solution

The fourth proportional to 12,003.66, 18,004.20 and 3,239.46 is: 4,858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.66 : 18,004.20 = 3,239.46 : x
  2. Step 2: Convert to fraction form
    12,003.66/18,004.20 = 3,239.46/x
  3. Step 3: Cross multiply
    12,003.66x = 18,004.20 × 3,239.46
  4. Step 4: Simplify right side
    12,003.66x = 58,323,885.73
  5. Step 5: Solve for x
    x = 58,323,885.73/12,003.66
  6. Step 6: Final answer
    x = 4,858.84

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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.