Home / 18,002.67-27,003.60-8,139.30

Finding the Fourth Proportional to 18,002.67, 27,003.60 and 8,139.30

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Solution

The fourth proportional to 18,002.67, 27,003.60 and 8,139.30 is: 12,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,002.67 : 27,003.60 = 8,139.30 : x
  2. Step 2: Convert to fraction form
    18,002.67/27,003.60 = 8,139.30/x
  3. Step 3: Cross multiply
    18,002.67x = 27,003.60 × 8,139.30
  4. Step 4: Simplify right side
    18,002.67x = 219,790,401.48
  5. Step 5: Solve for x
    x = 219,790,401.48/18,002.67
  6. Step 6: Final answer
    x = 12,208.77

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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.