Home / 21,168.40-29,211.24-11,738.32

Finding the Fourth Proportional to 21,168.40, 29,211.24 and 11,738.32

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Solution

The fourth proportional to 21,168.40, 29,211.24 and 11,738.32 is: 16,198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.40 : 29,211.24 = 11,738.32 : x
  2. Step 2: Convert to fraction form
    21,168.40/29,211.24 = 11,738.32/x
  3. Step 3: Cross multiply
    21,168.40x = 29,211.24 × 11,738.32
  4. Step 4: Simplify right side
    21,168.40x = 342,890,882.72
  5. Step 5: Solve for x
    x = 342,890,882.72/21,168.40
  6. Step 6: Final answer
    x = 16,198.24

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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.