Home / 13,906.56-19,190.34-7,618.80

Finding the Fourth Proportional to 13,906.56, 19,190.34 and 7,618.80

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Solution

The fourth proportional to 13,906.56, 19,190.34 and 7,618.80 is: 10,513.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.56 : 19,190.34 = 7,618.80 : x
  2. Step 2: Convert to fraction form
    13,906.56/19,190.34 = 7,618.80/x
  3. Step 3: Cross multiply
    13,906.56x = 19,190.34 × 7,618.80
  4. Step 4: Simplify right side
    13,906.56x = 146,207,362.39
  5. Step 5: Solve for x
    x = 146,207,362.39/13,906.56
  6. Step 6: Final answer
    x = 10,513.55

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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.