Home / 21,350.98-29,464.79-11,919.54

Finding the Fourth Proportional to 21,350.98, 29,464.79 and 11,919.54

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Solution

The fourth proportional to 21,350.98, 29,464.79 and 11,919.54 is: 16,449.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.98 : 29,464.79 = 11,919.54 : x
  2. Step 2: Convert to fraction form
    21,350.98/29,464.79 = 11,919.54/x
  3. Step 3: Cross multiply
    21,350.98x = 29,464.79 × 11,919.54
  4. Step 4: Simplify right side
    21,350.98x = 351,206,743.00
  5. Step 5: Solve for x
    x = 351,206,743.00/21,350.98
  6. Step 6: Final answer
    x = 16,449.21

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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.