Home / 21,919.68-30,249.29-11,848.09

Finding the Fourth Proportional to 21,919.68, 30,249.29 and 11,848.09

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Solution

The fourth proportional to 21,919.68, 30,249.29 and 11,848.09 is: 16,350.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.68 : 30,249.29 = 11,848.09 : x
  2. Step 2: Convert to fraction form
    21,919.68/30,249.29 = 11,848.09/x
  3. Step 3: Cross multiply
    21,919.68x = 30,249.29 × 11,848.09
  4. Step 4: Simplify right side
    21,919.68x = 358,396,310.36
  5. Step 5: Solve for x
    x = 358,396,310.36/21,919.68
  6. Step 6: Final answer
    x = 16,350.44

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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.