Home / 15,424.93-21,286.41-8,351.36

Finding the Fourth Proportional to 15,424.93, 21,286.41 and 8,351.36

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Solution

The fourth proportional to 15,424.93, 21,286.41 and 8,351.36 is: 11,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.93 : 21,286.41 = 8,351.36 : x
  2. Step 2: Convert to fraction form
    15,424.93/21,286.41 = 8,351.36/x
  3. Step 3: Cross multiply
    15,424.93x = 21,286.41 × 8,351.36
  4. Step 4: Simplify right side
    15,424.93x = 177,770,324.83
  5. Step 5: Solve for x
    x = 177,770,324.83/15,424.93
  6. Step 6: Final answer
    x = 11,524.87

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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.