Home / 21,351.25-29,464.86-11,919.88

Finding the Fourth Proportional to 21,351.25, 29,464.86 and 11,919.88

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Solution

The fourth proportional to 21,351.25, 29,464.86 and 11,919.88 is: 16,449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.25 : 29,464.86 = 11,919.88 : x
  2. Step 2: Convert to fraction form
    21,351.25/29,464.86 = 11,919.88/x
  3. Step 3: Cross multiply
    21,351.25x = 29,464.86 × 11,919.88
  4. Step 4: Simplify right side
    21,351.25x = 351,217,595.42
  5. Step 5: Solve for x
    x = 351,217,595.42/21,351.25
  6. Step 6: Final answer
    x = 16,449.51

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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.