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Finding the Fourth Proportional to 12,485.26, 17,230.62 and 7,706.26

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Solution

The fourth proportional to 12,485.26, 17,230.62 and 7,706.26 is: 10,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.26 : 17,230.62 = 7,706.26 : x
  2. Step 2: Convert to fraction form
    12,485.26/17,230.62 = 7,706.26/x
  3. Step 3: Cross multiply
    12,485.26x = 17,230.62 × 7,706.26
  4. Step 4: Simplify right side
    12,485.26x = 132,783,637.68
  5. Step 5: Solve for x
    x = 132,783,637.68/12,485.26
  6. Step 6: Final answer
    x = 10,635.23

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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.