Home / 18,693.56-25,796.20-11,139.73

Finding the Fourth Proportional to 18,693.56, 25,796.20 and 11,139.73

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Solution

The fourth proportional to 18,693.56, 25,796.20 and 11,139.73 is: 15,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.56 : 25,796.20 = 11,139.73 : x
  2. Step 2: Convert to fraction form
    18,693.56/25,796.20 = 11,139.73/x
  3. Step 3: Cross multiply
    18,693.56x = 25,796.20 × 11,139.73
  4. Step 4: Simplify right side
    18,693.56x = 287,362,574.05
  5. Step 5: Solve for x
    x = 287,362,574.05/18,693.56
  6. Step 6: Final answer
    x = 15,372.28

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Half scale
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Double scale
Find fourth proportional to 18,694.56, 25,797.58 and 11,140.73
Similar ratio
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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.