Home / 13,845.84-20,768.40-3,457.68

Finding the Fourth Proportional to 13,845.84, 20,768.40 and 3,457.68

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Solution

The fourth proportional to 13,845.84, 20,768.40 and 3,457.68 is: 5,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.84 : 20,768.40 = 3,457.68 : x
  2. Step 2: Convert to fraction form
    13,845.84/20,768.40 = 3,457.68/x
  3. Step 3: Cross multiply
    13,845.84x = 20,768.40 × 3,457.68
  4. Step 4: Simplify right side
    13,845.84x = 71,810,481.31
  5. Step 5: Solve for x
    x = 71,810,481.31/13,845.84
  6. Step 6: Final answer
    x = 5,186.43

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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.