Home / 12,272.21-16,936.32-7,239.38

Finding the Fourth Proportional to 12,272.21, 16,936.32 and 7,239.38

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Solution

The fourth proportional to 12,272.21, 16,936.32 and 7,239.38 is: 9,990.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.21 : 16,936.32 = 7,239.38 : x
  2. Step 2: Convert to fraction form
    12,272.21/16,936.32 = 7,239.38/x
  3. Step 3: Cross multiply
    12,272.21x = 16,936.32 × 7,239.38
  4. Step 4: Simplify right side
    12,272.21x = 122,608,371.60
  5. Step 5: Solve for x
    x = 122,608,371.60/12,272.21
  6. Step 6: Final answer
    x = 9,990.74

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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.