Home / 20,872.67-31,307.78-6,841.85

Finding the Fourth Proportional to 20,872.67, 31,307.78 and 6,841.85

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Solution

The fourth proportional to 20,872.67, 31,307.78 and 6,841.85 is: 10,262.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.67 : 31,307.78 = 6,841.85 : x
  2. Step 2: Convert to fraction form
    20,872.67/31,307.78 = 6,841.85/x
  3. Step 3: Cross multiply
    20,872.67x = 31,307.78 × 6,841.85
  4. Step 4: Simplify right side
    20,872.67x = 214,202,995.16
  5. Step 5: Solve for x
    x = 214,202,995.16/20,872.67
  6. Step 6: Final answer
    x = 10,262.37

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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.