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Finding the Fourth Proportional to 21,136.01, 29,168.57 and 11,704.58

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Solution

The fourth proportional to 21,136.01, 29,168.57 and 11,704.58 is: 16,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.01 : 29,168.57 = 11,704.58 : x
  2. Step 2: Convert to fraction form
    21,136.01/29,168.57 = 11,704.58/x
  3. Step 3: Cross multiply
    21,136.01x = 29,168.57 × 11,704.58
  4. Step 4: Simplify right side
    21,136.01x = 341,405,656.68
  5. Step 5: Solve for x
    x = 341,405,656.68/21,136.01
  6. Step 6: Final answer
    x = 16,152.80

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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.