Home / 9,896.97-13,657.83-5,420.73

Finding the Fourth Proportional to 9,896.97, 13,657.83 and 5,420.73

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Solution

The fourth proportional to 9,896.97, 13,657.83 and 5,420.73 is: 7,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,896.97 : 13,657.83 = 5,420.73 : x
  2. Step 2: Convert to fraction form
    9,896.97/13,657.83 = 5,420.73/x
  3. Step 3: Cross multiply
    9,896.97x = 13,657.83 × 5,420.73
  4. Step 4: Simplify right side
    9,896.97x = 74,035,408.82
  5. Step 5: Solve for x
    x = 74,035,408.82/9,896.97
  6. Step 6: Final answer
    x = 7,480.61

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Half scale
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Double scale
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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.