Home / 12,165.72-18,247.20-3,845.76

Finding the Fourth Proportional to 12,165.72, 18,247.20 and 3,845.76

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Solution

The fourth proportional to 12,165.72, 18,247.20 and 3,845.76 is: 5,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.72 : 18,247.20 = 3,845.76 : x
  2. Step 2: Convert to fraction form
    12,165.72/18,247.20 = 3,845.76/x
  3. Step 3: Cross multiply
    12,165.72x = 18,247.20 × 3,845.76
  4. Step 4: Simplify right side
    12,165.72x = 70,174,351.87
  5. Step 5: Solve for x
    x = 70,174,351.87/12,165.72
  6. Step 6: Final answer
    x = 5,768.20

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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.