Home / 20,221.41-30,353.67-17,896.20

Finding the Fourth Proportional to 20,221.41, 30,353.67 and 17,896.20

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Solution

The fourth proportional to 20,221.41, 30,353.67 and 17,896.20 is: 26,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.41 : 30,353.67 = 17,896.20 : x
  2. Step 2: Convert to fraction form
    20,221.41/30,353.67 = 17,896.20/x
  3. Step 3: Cross multiply
    20,221.41x = 30,353.67 × 17,896.20
  4. Step 4: Simplify right side
    20,221.41x = 543,215,349.05
  5. Step 5: Solve for x
    x = 543,215,349.05/20,221.41
  6. Step 6: Final answer
    x = 26,863.38

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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.