Home / 12,215.88-18,320.08-3,448.44

Finding the Fourth Proportional to 12,215.88, 18,320.08 and 3,448.44

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Solution

The fourth proportional to 12,215.88, 18,320.08 and 3,448.44 is: 5,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.88 : 18,320.08 = 3,448.44 : x
  2. Step 2: Convert to fraction form
    12,215.88/18,320.08 = 3,448.44/x
  3. Step 3: Cross multiply
    12,215.88x = 18,320.08 × 3,448.44
  4. Step 4: Simplify right side
    12,215.88x = 63,175,696.68
  5. Step 5: Solve for x
    x = 63,175,696.68/12,215.88
  6. Step 6: Final answer
    x = 5,171.60

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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.