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Finding the Fourth Proportional to 32,874.48, 45,399.92 and 20,943.20

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Solution

The fourth proportional to 32,874.48, 45,399.92 and 20,943.20 is: 28,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,874.48 : 45,399.92 = 20,943.20 : x
  2. Step 2: Convert to fraction form
    32,874.48/45,399.92 = 20,943.20/x
  3. Step 3: Cross multiply
    32,874.48x = 45,399.92 × 20,943.20
  4. Step 4: Simplify right side
    32,874.48x = 950,819,604.54
  5. Step 5: Solve for x
    x = 950,819,604.54/32,874.48
  6. Step 6: Final answer
    x = 28,922.73

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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.