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Finding the Fourth Proportional to 13,662.83, 18,718.15 and 13,150.90

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Solution

The fourth proportional to 13,662.83, 18,718.15 and 13,150.90 is: 18,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.83 : 18,718.15 = 13,150.90 : x
  2. Step 2: Convert to fraction form
    13,662.83/18,718.15 = 13,150.90/x
  3. Step 3: Cross multiply
    13,662.83x = 18,718.15 × 13,150.90
  4. Step 4: Simplify right side
    13,662.83x = 246,160,453.08
  5. Step 5: Solve for x
    x = 246,160,453.08/13,662.83
  6. Step 6: Final answer
    x = 18,016.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.