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Finding the Fourth Proportional to 18,612.06, 27,928.35 and 8,223.54

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Solution

The fourth proportional to 18,612.06, 27,928.35 and 8,223.54 is: 12,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.06 : 27,928.35 = 8,223.54 : x
  2. Step 2: Convert to fraction form
    18,612.06/27,928.35 = 8,223.54/x
  3. Step 3: Cross multiply
    18,612.06x = 27,928.35 × 8,223.54
  4. Step 4: Simplify right side
    18,612.06x = 229,669,903.36
  5. Step 5: Solve for x
    x = 229,669,903.36/18,612.06
  6. Step 6: Final answer
    x = 12,339.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.