Home / 13,183.60-18,193.80-7,215.64

Finding the Fourth Proportional to 13,183.60, 18,193.80 and 7,215.64

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Solution

The fourth proportional to 13,183.60, 18,193.80 and 7,215.64 is: 9,957.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.60 : 18,193.80 = 7,215.64 : x
  2. Step 2: Convert to fraction form
    13,183.60/18,193.80 = 7,215.64/x
  3. Step 3: Cross multiply
    13,183.60x = 18,193.80 × 7,215.64
  4. Step 4: Simplify right side
    13,183.60x = 131,279,911.03
  5. Step 5: Solve for x
    x = 131,279,911.03/13,183.60
  6. Step 6: Final answer
    x = 9,957.82

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Half scale
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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.