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Finding the Fourth Proportional to 21,806.65, 30,098.01 and 13,847.37

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Solution

The fourth proportional to 21,806.65, 30,098.01 and 13,847.37 is: 19,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.65 : 30,098.01 = 13,847.37 : x
  2. Step 2: Convert to fraction form
    21,806.65/30,098.01 = 13,847.37/x
  3. Step 3: Cross multiply
    21,806.65x = 30,098.01 × 13,847.37
  4. Step 4: Simplify right side
    21,806.65x = 416,778,280.73
  5. Step 5: Solve for x
    x = 416,778,280.73/21,806.65
  6. Step 6: Final answer
    x = 19,112.44

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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.