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Finding the Fourth Proportional to 12,736.56, 17,576.46 and 7,147.56

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Solution

The fourth proportional to 12,736.56, 17,576.46 and 7,147.56 is: 9,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,736.56 : 17,576.46 = 7,147.56 : x
  2. Step 2: Convert to fraction form
    12,736.56/17,576.46 = 7,147.56/x
  3. Step 3: Cross multiply
    12,736.56x = 17,576.46 × 7,147.56
  4. Step 4: Simplify right side
    12,736.56x = 125,628,802.44
  5. Step 5: Solve for x
    x = 125,628,802.44/12,736.56
  6. Step 6: Final answer
    x = 9,863.64

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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.