Home / 21,269.25-29,351.57-11,839.64

Finding the Fourth Proportional to 21,269.25, 29,351.57 and 11,839.64

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Solution

The fourth proportional to 21,269.25, 29,351.57 and 11,839.64 is: 16,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.25 : 29,351.57 = 11,839.64 : x
  2. Step 2: Convert to fraction form
    21,269.25/29,351.57 = 11,839.64/x
  3. Step 3: Cross multiply
    21,269.25x = 29,351.57 × 11,839.64
  4. Step 4: Simplify right side
    21,269.25x = 347,511,816.28
  5. Step 5: Solve for x
    x = 347,511,816.28/21,269.25
  6. Step 6: Final answer
    x = 16,338.70

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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.