Home / 12,128.73-16,736.30-6,823.44

Finding the Fourth Proportional to 12,128.73, 16,736.30 and 6,823.44

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Solution

The fourth proportional to 12,128.73, 16,736.30 and 6,823.44 is: 9,415.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.73 : 16,736.30 = 6,823.44 : x
  2. Step 2: Convert to fraction form
    12,128.73/16,736.30 = 6,823.44/x
  3. Step 3: Cross multiply
    12,128.73x = 16,736.30 × 6,823.44
  4. Step 4: Simplify right side
    12,128.73x = 114,199,104.75
  5. Step 5: Solve for x
    x = 114,199,104.75/12,128.73
  6. Step 6: Final answer
    x = 9,415.59

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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.