Home / 13,383.44-18,460.79-8,609.61

Finding the Fourth Proportional to 13,383.44, 18,460.79 and 8,609.61

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Solution

The fourth proportional to 13,383.44, 18,460.79 and 8,609.61 is: 11,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.44 : 18,460.79 = 8,609.61 : x
  2. Step 2: Convert to fraction form
    13,383.44/18,460.79 = 8,609.61/x
  3. Step 3: Cross multiply
    13,383.44x = 18,460.79 × 8,609.61
  4. Step 4: Simplify right side
    13,383.44x = 158,940,260.66
  5. Step 5: Solve for x
    x = 158,940,260.66/13,383.44
  6. Step 6: Final answer
    x = 11,875.89

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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.