Home / 13,321.24-18,382.60-8,285.32

Finding the Fourth Proportional to 13,321.24, 18,382.60 and 8,285.32

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Solution

The fourth proportional to 13,321.24, 18,382.60 and 8,285.32 is: 11,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.24 : 18,382.60 = 8,285.32 : x
  2. Step 2: Convert to fraction form
    13,321.24/18,382.60 = 8,285.32/x
  3. Step 3: Cross multiply
    13,321.24x = 18,382.60 × 8,285.32
  4. Step 4: Simplify right side
    13,321.24x = 152,305,723.43
  5. Step 5: Solve for x
    x = 152,305,723.43/13,321.24
  6. Step 6: Final answer
    x = 11,433.30

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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.