Home / 21,433.87-29,578.74-11,874.38

Finding the Fourth Proportional to 21,433.87, 29,578.74 and 11,874.38

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Solution

The fourth proportional to 21,433.87, 29,578.74 and 11,874.38 is: 16,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.87 : 29,578.74 = 11,874.38 : x
  2. Step 2: Convert to fraction form
    21,433.87/29,578.74 = 11,874.38/x
  3. Step 3: Cross multiply
    21,433.87x = 29,578.74 × 11,874.38
  4. Step 4: Simplify right side
    21,433.87x = 351,229,198.68
  5. Step 5: Solve for x
    x = 351,229,198.68/21,433.87
  6. Step 6: Final answer
    x = 16,386.64

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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.