Home / 13,183.57-18,213.09-8,656.99

Finding the Fourth Proportional to 13,183.57, 18,213.09 and 8,656.99

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Solution

The fourth proportional to 13,183.57, 18,213.09 and 8,656.99 is: 11,959.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.57 : 18,213.09 = 8,656.99 : x
  2. Step 2: Convert to fraction form
    13,183.57/18,213.09 = 8,656.99/x
  3. Step 3: Cross multiply
    13,183.57x = 18,213.09 × 8,656.99
  4. Step 4: Simplify right side
    13,183.57x = 157,670,538.00
  5. Step 5: Solve for x
    x = 157,670,538.00/13,183.57
  6. Step 6: Final answer
    x = 11,959.62

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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.