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Finding the Fourth Proportional to 35,481.81, 48,962.67 and 20,363.83

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Solution

The fourth proportional to 35,481.81, 48,962.67 and 20,363.83 is: 28,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,481.81 : 48,962.67 = 20,363.83 : x
  2. Step 2: Convert to fraction form
    35,481.81/48,962.67 = 20,363.83/x
  3. Step 3: Cross multiply
    35,481.81x = 48,962.67 × 20,363.83
  4. Step 4: Simplify right side
    35,481.81x = 997,067,564.87
  5. Step 5: Solve for x
    x = 997,067,564.87/35,481.81
  6. Step 6: Final answer
    x = 28,100.81

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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.