Home / 20,512.35-30,768.53-19,216.35

Finding the Fourth Proportional to 20,512.35, 30,768.53 and 19,216.35

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Solution

The fourth proportional to 20,512.35, 30,768.53 and 19,216.35 is: 28,824.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.35 : 30,768.53 = 19,216.35 : x
  2. Step 2: Convert to fraction form
    20,512.35/30,768.53 = 19,216.35/x
  3. Step 3: Cross multiply
    20,512.35x = 30,768.53 × 19,216.35
  4. Step 4: Simplify right side
    20,512.35x = 591,258,745.38
  5. Step 5: Solve for x
    x = 591,258,745.38/20,512.35
  6. Step 6: Final answer
    x = 28,824.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.