Home / 21,136.12-29,168.74-11,704.68

Finding the Fourth Proportional to 21,136.12, 29,168.74 and 11,704.68

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Solution

The fourth proportional to 21,136.12, 29,168.74 and 11,704.68 is: 16,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.12 : 29,168.74 = 11,704.68 : x
  2. Step 2: Convert to fraction form
    21,136.12/29,168.74 = 11,704.68/x
  3. Step 3: Cross multiply
    21,136.12x = 29,168.74 × 11,704.68
  4. Step 4: Simplify right side
    21,136.12x = 341,410,767.70
  5. Step 5: Solve for x
    x = 341,410,767.70/21,136.12
  6. Step 6: Final answer
    x = 16,152.95

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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.