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Finding the Fourth Proportional to 12,129.11, 16,736.22 and 6,750.61

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Solution

The fourth proportional to 12,129.11, 16,736.22 and 6,750.61 is: 9,314.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.11 : 16,736.22 = 6,750.61 : x
  2. Step 2: Convert to fraction form
    12,129.11/16,736.22 = 6,750.61/x
  3. Step 3: Cross multiply
    12,129.11x = 16,736.22 × 6,750.61
  4. Step 4: Simplify right side
    12,129.11x = 112,979,652.25
  5. Step 5: Solve for x
    x = 112,979,652.25/12,129.11
  6. Step 6: Final answer
    x = 9,314.75

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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.