Home / 12,214.79-18,321.88-3,449.58

Finding the Fourth Proportional to 12,214.79, 18,321.88 and 3,449.58

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Solution

The fourth proportional to 12,214.79, 18,321.88 and 3,449.58 is: 5,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.79 : 18,321.88 = 3,449.58 : x
  2. Step 2: Convert to fraction form
    12,214.79/18,321.88 = 3,449.58/x
  3. Step 3: Cross multiply
    12,214.79x = 18,321.88 × 3,449.58
  4. Step 4: Simplify right side
    12,214.79x = 63,202,790.81
  5. Step 5: Solve for x
    x = 63,202,790.81/12,214.79
  6. Step 6: Final answer
    x = 5,174.28

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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.