Home / 15,736.44-21,716.12-8,662.72

Finding the Fourth Proportional to 15,736.44, 21,716.12 and 8,662.72

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Solution

The fourth proportional to 15,736.44, 21,716.12 and 8,662.72 is: 11,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.44 : 21,716.12 = 8,662.72 : x
  2. Step 2: Convert to fraction form
    15,736.44/21,716.12 = 8,662.72/x
  3. Step 3: Cross multiply
    15,736.44x = 21,716.12 × 8,662.72
  4. Step 4: Simplify right side
    15,736.44x = 188,120,667.05
  5. Step 5: Solve for x
    x = 188,120,667.05/15,736.44
  6. Step 6: Final answer
    x = 11,954.46

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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.