Home / 12,107.77-18,161.66-4,311.12

Finding the Fourth Proportional to 12,107.77, 18,161.66 and 4,311.12

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Solution

The fourth proportional to 12,107.77, 18,161.66 and 4,311.12 is: 6,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.77 : 18,161.66 = 4,311.12 : x
  2. Step 2: Convert to fraction form
    12,107.77/18,161.66 = 4,311.12/x
  3. Step 3: Cross multiply
    12,107.77x = 18,161.66 × 4,311.12
  4. Step 4: Simplify right side
    12,107.77x = 78,296,983.30
  5. Step 5: Solve for x
    x = 78,296,983.30/12,107.77
  6. Step 6: Final answer
    x = 6,466.67

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Double scale
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Similar ratio
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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.