Home / 12,321.97-16,998.39-8,071.19

Finding the Fourth Proportional to 12,321.97, 16,998.39 and 8,071.19

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Solution

The fourth proportional to 12,321.97, 16,998.39 and 8,071.19 is: 11,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.97 : 16,998.39 = 8,071.19 : x
  2. Step 2: Convert to fraction form
    12,321.97/16,998.39 = 8,071.19/x
  3. Step 3: Cross multiply
    12,321.97x = 16,998.39 × 8,071.19
  4. Step 4: Simplify right side
    12,321.97x = 137,197,195.03
  5. Step 5: Solve for x
    x = 137,197,195.03/12,321.97
  6. Step 6: Final answer
    x = 11,134.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.