Home / 20,638.44-30,937.86-6,590.70

Finding the Fourth Proportional to 20,638.44, 30,937.86 and 6,590.70

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Solution

The fourth proportional to 20,638.44, 30,937.86 and 6,590.70 is: 9,879.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.44 : 30,937.86 = 6,590.70 : x
  2. Step 2: Convert to fraction form
    20,638.44/30,937.86 = 6,590.70/x
  3. Step 3: Cross multiply
    20,638.44x = 30,937.86 × 6,590.70
  4. Step 4: Simplify right side
    20,638.44x = 203,902,153.90
  5. Step 5: Solve for x
    x = 203,902,153.90/20,638.44
  6. Step 6: Final answer
    x = 9,879.73

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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.