Home / 21,093.21-29,100.26-12,135.89

Finding the Fourth Proportional to 21,093.21, 29,100.26 and 12,135.89

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Solution

The fourth proportional to 21,093.21, 29,100.26 and 12,135.89 is: 16,742.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.21 : 29,100.26 = 12,135.89 : x
  2. Step 2: Convert to fraction form
    21,093.21/29,100.26 = 12,135.89/x
  3. Step 3: Cross multiply
    21,093.21x = 29,100.26 × 12,135.89
  4. Step 4: Simplify right side
    21,093.21x = 353,157,493.65
  5. Step 5: Solve for x
    x = 353,157,493.65/21,093.21
  6. Step 6: Final answer
    x = 16,742.71

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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.