Home / 21,093.94-29,115.41-13,131.44

Finding the Fourth Proportional to 21,093.94, 29,115.41 and 13,131.44

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Solution

The fourth proportional to 21,093.94, 29,115.41 and 13,131.44 is: 18,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.94 : 29,115.41 = 13,131.44 : x
  2. Step 2: Convert to fraction form
    21,093.94/29,115.41 = 13,131.44/x
  3. Step 3: Cross multiply
    21,093.94x = 29,115.41 × 13,131.44
  4. Step 4: Simplify right side
    21,093.94x = 382,327,259.49
  5. Step 5: Solve for x
    x = 382,327,259.49/21,093.94
  6. Step 6: Final answer
    x = 18,124.98

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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.