Home / 13,183.54-18,193.28-7,215.20

Finding the Fourth Proportional to 13,183.54, 18,193.28 and 7,215.20

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Solution

The fourth proportional to 13,183.54, 18,193.28 and 7,215.20 is: 9,956.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.54 : 18,193.28 = 7,215.20 : x
  2. Step 2: Convert to fraction form
    13,183.54/18,193.28 = 7,215.20/x
  3. Step 3: Cross multiply
    13,183.54x = 18,193.28 × 7,215.20
  4. Step 4: Simplify right side
    13,183.54x = 131,268,153.86
  5. Step 5: Solve for x
    x = 131,268,153.86/13,183.54
  6. Step 6: Final answer
    x = 9,956.97

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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.