Home / 20,396.21-28,141.97-11,893.23

Finding the Fourth Proportional to 20,396.21, 28,141.97 and 11,893.23

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Solution

The fourth proportional to 20,396.21, 28,141.97 and 11,893.23 is: 16,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.21 : 28,141.97 = 11,893.23 : x
  2. Step 2: Convert to fraction form
    20,396.21/28,141.97 = 11,893.23/x
  3. Step 3: Cross multiply
    20,396.21x = 28,141.97 × 11,893.23
  4. Step 4: Simplify right side
    20,396.21x = 334,698,862.40
  5. Step 5: Solve for x
    x = 334,698,862.40/20,396.21
  6. Step 6: Final answer
    x = 16,409.86

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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.