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Finding the Fourth Proportional to 12,995.36, 17,936.38 and 8,212.26

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Solution

The fourth proportional to 12,995.36, 17,936.38 and 8,212.26 is: 11,334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.36 : 17,936.38 = 8,212.26 : x
  2. Step 2: Convert to fraction form
    12,995.36/17,936.38 = 8,212.26/x
  3. Step 3: Cross multiply
    12,995.36x = 17,936.38 × 8,212.26
  4. Step 4: Simplify right side
    12,995.36x = 147,298,220.00
  5. Step 5: Solve for x
    x = 147,298,220.00/12,995.36
  6. Step 6: Final answer
    x = 11,334.68

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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.