Home / 13,183.76-18,193.64-7,215.48

Finding the Fourth Proportional to 13,183.76, 18,193.64 and 7,215.48

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Solution

The fourth proportional to 13,183.76, 18,193.64 and 7,215.48 is: 9,957.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.76 : 18,193.64 = 7,215.48 : x
  2. Step 2: Convert to fraction form
    13,183.76/18,193.64 = 7,215.48/x
  3. Step 3: Cross multiply
    13,183.76x = 18,193.64 × 7,215.48
  4. Step 4: Simplify right side
    13,183.76x = 131,275,845.55
  5. Step 5: Solve for x
    x = 131,275,845.55/13,183.76
  6. Step 6: Final answer
    x = 9,957.39

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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.