Home / 12,696.33-17,521.35-8,439.97

Finding the Fourth Proportional to 12,696.33, 17,521.35 and 8,439.97

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Solution

The fourth proportional to 12,696.33, 17,521.35 and 8,439.97 is: 11,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.33 : 17,521.35 = 8,439.97 : x
  2. Step 2: Convert to fraction form
    12,696.33/17,521.35 = 8,439.97/x
  3. Step 3: Cross multiply
    12,696.33x = 17,521.35 × 8,439.97
  4. Step 4: Simplify right side
    12,696.33x = 147,879,668.36
  5. Step 5: Solve for x
    x = 147,879,668.36/12,696.33
  6. Step 6: Final answer
    x = 11,647.43

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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.