Home / 15,736.36-21,716.18-8,662.78

Finding the Fourth Proportional to 15,736.36, 21,716.18 and 8,662.78

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Solution

The fourth proportional to 15,736.36, 21,716.18 and 8,662.78 is: 11,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.36 : 21,716.18 = 8,662.78 : x
  2. Step 2: Convert to fraction form
    15,736.36/21,716.18 = 8,662.78/x
  3. Step 3: Cross multiply
    15,736.36x = 21,716.18 × 8,662.78
  4. Step 4: Simplify right side
    15,736.36x = 188,122,544.07
  5. Step 5: Solve for x
    x = 188,122,544.07/15,736.36
  6. Step 6: Final answer
    x = 11,954.64

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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.