Home / 20,830.03-31,241.84-6,790.02

Finding the Fourth Proportional to 20,830.03, 31,241.84 and 6,790.02

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Solution

The fourth proportional to 20,830.03, 31,241.84 and 6,790.02 is: 10,183.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.03 : 31,241.84 = 6,790.02 : x
  2. Step 2: Convert to fraction form
    20,830.03/31,241.84 = 6,790.02/x
  3. Step 3: Cross multiply
    20,830.03x = 31,241.84 × 6,790.02
  4. Step 4: Simplify right side
    20,830.03x = 212,132,718.44
  5. Step 5: Solve for x
    x = 212,132,718.44/20,830.03
  6. Step 6: Final answer
    x = 10,183.99

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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.