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Finding the Fourth Proportional to 12,469.44, 18,730.56 and 7,855.68

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Solution

The fourth proportional to 12,469.44, 18,730.56 and 7,855.68 is: 11,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.44 : 18,730.56 = 7,855.68 : x
  2. Step 2: Convert to fraction form
    12,469.44/18,730.56 = 7,855.68/x
  3. Step 3: Cross multiply
    12,469.44x = 18,730.56 × 7,855.68
  4. Step 4: Simplify right side
    12,469.44x = 147,141,285.58
  5. Step 5: Solve for x
    x = 147,141,285.58/12,469.44
  6. Step 6: Final answer
    x = 11,800.15

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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.