Home / 20,647.22-30,982.11-8,960.42

Finding the Fourth Proportional to 20,647.22, 30,982.11 and 8,960.42

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Solution

The fourth proportional to 20,647.22, 30,982.11 and 8,960.42 is: 13,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.22 : 30,982.11 = 8,960.42 : x
  2. Step 2: Convert to fraction form
    20,647.22/30,982.11 = 8,960.42/x
  3. Step 3: Cross multiply
    20,647.22x = 30,982.11 × 8,960.42
  4. Step 4: Simplify right side
    20,647.22x = 277,612,718.09
  5. Step 5: Solve for x
    x = 277,612,718.09/20,647.22
  6. Step 6: Final answer
    x = 13,445.53

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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.