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Finding the Fourth Proportional to 18,481.86, 27,722.83 and 4,630.90

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Solution

The fourth proportional to 18,481.86, 27,722.83 and 4,630.90 is: 6,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.86 : 27,722.83 = 4,630.90 : x
  2. Step 2: Convert to fraction form
    18,481.86/27,722.83 = 4,630.90/x
  3. Step 3: Cross multiply
    18,481.86x = 27,722.83 × 4,630.90
  4. Step 4: Simplify right side
    18,481.86x = 128,381,653.45
  5. Step 5: Solve for x
    x = 128,381,653.45/18,481.86
  6. Step 6: Final answer
    x = 6,946.36

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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.