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Finding the Fourth Proportional to 20,353.44, 30,687.06 and 20,227.08

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Solution

The fourth proportional to 20,353.44, 30,687.06 and 20,227.08 is: 30,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.44 : 30,687.06 = 20,227.08 : x
  2. Step 2: Convert to fraction form
    20,353.44/30,687.06 = 20,227.08/x
  3. Step 3: Cross multiply
    20,353.44x = 30,687.06 × 20,227.08
  4. Step 4: Simplify right side
    20,353.44x = 620,709,617.58
  5. Step 5: Solve for x
    x = 620,709,617.58/20,353.44
  6. Step 6: Final answer
    x = 30,496.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.