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Finding the Fourth Proportional to 20,652.96, 30,992.40 and 19,324.56

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Solution

The fourth proportional to 20,652.96, 30,992.40 and 19,324.56 is: 28,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.96 : 30,992.40 = 19,324.56 : x
  2. Step 2: Convert to fraction form
    20,652.96/30,992.40 = 19,324.56/x
  3. Step 3: Cross multiply
    20,652.96x = 30,992.40 × 19,324.56
  4. Step 4: Simplify right side
    20,652.96x = 598,914,493.34
  5. Step 5: Solve for x
    x = 598,914,493.34/20,652.96
  6. Step 6: Final answer
    x = 28,998.97

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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.