Home / 20,647.72-30,975.42-6,806.44

Finding the Fourth Proportional to 20,647.72, 30,975.42 and 6,806.44

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Solution

The fourth proportional to 20,647.72, 30,975.42 and 6,806.44 is: 10,210.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.72 : 30,975.42 = 6,806.44 : x
  2. Step 2: Convert to fraction form
    20,647.72/30,975.42 = 6,806.44/x
  3. Step 3: Cross multiply
    20,647.72x = 30,975.42 × 6,806.44
  4. Step 4: Simplify right side
    20,647.72x = 210,832,337.70
  5. Step 5: Solve for x
    x = 210,832,337.70/20,647.72
  6. Step 6: Final answer
    x = 10,210.93

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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.