Home / 20,888.74-31,334.43-6,850.21

Finding the Fourth Proportional to 20,888.74, 31,334.43 and 6,850.21

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Solution

The fourth proportional to 20,888.74, 31,334.43 and 6,850.21 is: 10,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.74 : 31,334.43 = 6,850.21 : x
  2. Step 2: Convert to fraction form
    20,888.74/31,334.43 = 6,850.21/x
  3. Step 3: Cross multiply
    20,888.74x = 31,334.43 × 6,850.21
  4. Step 4: Simplify right side
    20,888.74x = 214,647,425.73
  5. Step 5: Solve for x
    x = 214,647,425.73/20,888.74
  6. Step 6: Final answer
    x = 10,275.75

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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.