Home / 21,850.91-30,081.36-20,846.68

Finding the Fourth Proportional to 21,850.91, 30,081.36 and 20,846.68

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Solution

The fourth proportional to 21,850.91, 30,081.36 and 20,846.68 is: 28,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.91 : 30,081.36 = 20,846.68 : x
  2. Step 2: Convert to fraction form
    21,850.91/30,081.36 = 20,846.68/x
  3. Step 3: Cross multiply
    21,850.91x = 30,081.36 × 20,846.68
  4. Step 4: Simplify right side
    21,850.91x = 627,096,485.88
  5. Step 5: Solve for x
    x = 627,096,485.88/21,850.91
  6. Step 6: Final answer
    x = 28,698.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.