Home / 21,074.92-29,083.38-11,643.40

Finding the Fourth Proportional to 21,074.92, 29,083.38 and 11,643.40

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Solution

The fourth proportional to 21,074.92, 29,083.38 and 11,643.40 is: 16,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.92 : 29,083.38 = 11,643.40 : x
  2. Step 2: Convert to fraction form
    21,074.92/29,083.38 = 11,643.40/x
  3. Step 3: Cross multiply
    21,074.92x = 29,083.38 × 11,643.40
  4. Step 4: Simplify right side
    21,074.92x = 338,629,426.69
  5. Step 5: Solve for x
    x = 338,629,426.69/21,074.92
  6. Step 6: Final answer
    x = 16,067.89

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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.