Home / 21,369.41-29,481.94-13,408.73

Finding the Fourth Proportional to 21,369.41, 29,481.94 and 13,408.73

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Solution

The fourth proportional to 21,369.41, 29,481.94 and 13,408.73 is: 18,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.41 : 29,481.94 = 13,408.73 : x
  2. Step 2: Convert to fraction form
    21,369.41/29,481.94 = 13,408.73/x
  3. Step 3: Cross multiply
    21,369.41x = 29,481.94 × 13,408.73
  4. Step 4: Simplify right side
    21,369.41x = 395,315,373.34
  5. Step 5: Solve for x
    x = 395,315,373.34/21,369.41
  6. Step 6: Final answer
    x = 18,499.12

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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.