Home / 15,013.23-20,716.82-8,297.78

Finding the Fourth Proportional to 15,013.23, 20,716.82 and 8,297.78

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Solution

The fourth proportional to 15,013.23, 20,716.82 and 8,297.78 is: 11,450.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.23 : 20,716.82 = 8,297.78 : x
  2. Step 2: Convert to fraction form
    15,013.23/20,716.82 = 8,297.78/x
  3. Step 3: Cross multiply
    15,013.23x = 20,716.82 × 8,297.78
  4. Step 4: Simplify right side
    15,013.23x = 171,903,469.59
  5. Step 5: Solve for x
    x = 171,903,469.59/15,013.23
  6. Step 6: Final answer
    x = 11,450.13

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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.