Home / 21,626.88-29,845.84-12,551.55

Finding the Fourth Proportional to 21,626.88, 29,845.84 and 12,551.55

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Solution

The fourth proportional to 21,626.88, 29,845.84 and 12,551.55 is: 17,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.88 : 29,845.84 = 12,551.55 : x
  2. Step 2: Convert to fraction form
    21,626.88/29,845.84 = 12,551.55/x
  3. Step 3: Cross multiply
    21,626.88x = 29,845.84 × 12,551.55
  4. Step 4: Simplify right side
    21,626.88x = 374,611,553.05
  5. Step 5: Solve for x
    x = 374,611,553.05/21,626.88
  6. Step 6: Final answer
    x = 17,321.57

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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.