Home / 18,896.64-28,355.40-7,800.73

Finding the Fourth Proportional to 18,896.64, 28,355.40 and 7,800.73

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Solution

The fourth proportional to 18,896.64, 28,355.40 and 7,800.73 is: 11,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.64 : 28,355.40 = 7,800.73 : x
  2. Step 2: Convert to fraction form
    18,896.64/28,355.40 = 7,800.73/x
  3. Step 3: Cross multiply
    18,896.64x = 28,355.40 × 7,800.73
  4. Step 4: Simplify right side
    18,896.64x = 221,192,819.44
  5. Step 5: Solve for x
    x = 221,192,819.44/18,896.64
  6. Step 6: Final answer
    x = 11,705.40

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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.