Home / 13,664.73-20,480.49-7,409.91

Finding the Fourth Proportional to 13,664.73, 20,480.49 and 7,409.91

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Solution

The fourth proportional to 13,664.73, 20,480.49 and 7,409.91 is: 11,105.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.73 : 20,480.49 = 7,409.91 : x
  2. Step 2: Convert to fraction form
    13,664.73/20,480.49 = 7,409.91/x
  3. Step 3: Cross multiply
    13,664.73x = 20,480.49 × 7,409.91
  4. Step 4: Simplify right side
    13,664.73x = 151,758,587.66
  5. Step 5: Solve for x
    x = 151,758,587.66/13,664.73
  6. Step 6: Final answer
    x = 11,105.86

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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.