Home / 13,481.44-18,622.56-12,223.92

Finding the Fourth Proportional to 13,481.44, 18,622.56 and 12,223.92

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Solution

The fourth proportional to 13,481.44, 18,622.56 and 12,223.92 is: 16,885.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.44 : 18,622.56 = 12,223.92 : x
  2. Step 2: Convert to fraction form
    13,481.44/18,622.56 = 12,223.92/x
  3. Step 3: Cross multiply
    13,481.44x = 18,622.56 × 12,223.92
  4. Step 4: Simplify right side
    13,481.44x = 227,640,683.64
  5. Step 5: Solve for x
    x = 227,640,683.64/13,481.44
  6. Step 6: Final answer
    x = 16,885.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.