Home / 15,424.95-21,286.44-8,351.37

Finding the Fourth Proportional to 15,424.95, 21,286.44 and 8,351.37

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Solution

The fourth proportional to 15,424.95, 21,286.44 and 8,351.37 is: 11,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.95 : 21,286.44 = 8,351.37 : x
  2. Step 2: Convert to fraction form
    15,424.95/21,286.44 = 8,351.37/x
  3. Step 3: Cross multiply
    15,424.95x = 21,286.44 × 8,351.37
  4. Step 4: Simplify right side
    15,424.95x = 177,770,936.42
  5. Step 5: Solve for x
    x = 177,770,936.42/15,424.95
  6. Step 6: Final answer
    x = 11,524.90

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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.