Home / 12,213.12-18,318.04-3,448.72

Finding the Fourth Proportional to 12,213.12, 18,318.04 and 3,448.72

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Solution

The fourth proportional to 12,213.12, 18,318.04 and 3,448.72 is: 5,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.12 : 18,318.04 = 3,448.72 : x
  2. Step 2: Convert to fraction form
    12,213.12/18,318.04 = 3,448.72/x
  3. Step 3: Cross multiply
    12,213.12x = 18,318.04 × 3,448.72
  4. Step 4: Simplify right side
    12,213.12x = 63,173,790.91
  5. Step 5: Solve for x
    x = 63,173,790.91/12,213.12
  6. Step 6: Final answer
    x = 5,172.62

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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.