Home / 12,290.09-18,431.19-3,968.33

Finding the Fourth Proportional to 12,290.09, 18,431.19 and 3,968.33

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Solution

The fourth proportional to 12,290.09, 18,431.19 and 3,968.33 is: 5,951.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.09 : 18,431.19 = 3,968.33 : x
  2. Step 2: Convert to fraction form
    12,290.09/18,431.19 = 3,968.33/x
  3. Step 3: Cross multiply
    12,290.09x = 18,431.19 × 3,968.33
  4. Step 4: Simplify right side
    12,290.09x = 73,140,952.06
  5. Step 5: Solve for x
    x = 73,140,952.06/12,290.09
  6. Step 6: Final answer
    x = 5,951.22

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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.