Home / 21,168.21-29,214.27-11,738.55

Finding the Fourth Proportional to 21,168.21, 29,214.27 and 11,738.55

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Solution

The fourth proportional to 21,168.21, 29,214.27 and 11,738.55 is: 16,200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.21 : 29,214.27 = 11,738.55 : x
  2. Step 2: Convert to fraction form
    21,168.21/29,214.27 = 11,738.55/x
  3. Step 3: Cross multiply
    21,168.21x = 29,214.27 × 11,738.55
  4. Step 4: Simplify right side
    21,168.21x = 342,933,169.11
  5. Step 5: Solve for x
    x = 342,933,169.11/21,168.21
  6. Step 6: Final answer
    x = 16,200.39

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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.