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Finding the Fourth Proportional to 35,338.75, 48,769.78 and 21,918.92

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Solution

The fourth proportional to 35,338.75, 48,769.78 and 21,918.92 is: 30,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,338.75 : 48,769.78 = 21,918.92 : x
  2. Step 2: Convert to fraction form
    35,338.75/48,769.78 = 21,918.92/x
  3. Step 3: Cross multiply
    35,338.75x = 48,769.78 × 21,918.92
  4. Step 4: Simplify right side
    35,338.75x = 1,068,980,923.02
  5. Step 5: Solve for x
    x = 1,068,980,923.02/35,338.75
  6. Step 6: Final answer
    x = 30,249.54

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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.