Home / 20,558.94-30,819.78-13,165.26

Finding the Fourth Proportional to 20,558.94, 30,819.78 and 13,165.26

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Solution

The fourth proportional to 20,558.94, 30,819.78 and 13,165.26 is: 19,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.94 : 30,819.78 = 13,165.26 : x
  2. Step 2: Convert to fraction form
    20,558.94/30,819.78 = 13,165.26/x
  3. Step 3: Cross multiply
    20,558.94x = 30,819.78 × 13,165.26
  4. Step 4: Simplify right side
    20,558.94x = 405,750,416.84
  5. Step 5: Solve for x
    x = 405,750,416.84/20,558.94
  6. Step 6: Final answer
    x = 19,735.96

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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.