Home / 12,220.96-18,211.04-11,824.48

Finding the Fourth Proportional to 12,220.96, 18,211.04 and 11,824.48

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Solution

The fourth proportional to 12,220.96, 18,211.04 and 11,824.48 is: 17,620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.96 : 18,211.04 = 11,824.48 : x
  2. Step 2: Convert to fraction form
    12,220.96/18,211.04 = 11,824.48/x
  3. Step 3: Cross multiply
    12,220.96x = 18,211.04 × 11,824.48
  4. Step 4: Simplify right side
    12,220.96x = 215,336,078.26
  5. Step 5: Solve for x
    x = 215,336,078.26/12,220.96
  6. Step 6: Final answer
    x = 17,620.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.