Home / 12,215.72-18,324.64-3,896.92

Finding the Fourth Proportional to 12,215.72, 18,324.64 and 3,896.92

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Solution

The fourth proportional to 12,215.72, 18,324.64 and 3,896.92 is: 5,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.72 : 18,324.64 = 3,896.92 : x
  2. Step 2: Convert to fraction form
    12,215.72/18,324.64 = 3,896.92/x
  3. Step 3: Cross multiply
    12,215.72x = 18,324.64 × 3,896.92
  4. Step 4: Simplify right side
    12,215.72x = 71,409,656.11
  5. Step 5: Solve for x
    x = 71,409,656.11/12,215.72
  6. Step 6: Final answer
    x = 5,845.72

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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.