Home / 21,136.52-29,168.55-12,183.99

Finding the Fourth Proportional to 21,136.52, 29,168.55 and 12,183.99

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Solution

The fourth proportional to 21,136.52, 29,168.55 and 12,183.99 is: 16,814.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.52 : 29,168.55 = 12,183.99 : x
  2. Step 2: Convert to fraction form
    21,136.52/29,168.55 = 12,183.99/x
  3. Step 3: Cross multiply
    21,136.52x = 29,168.55 × 12,183.99
  4. Step 4: Simplify right side
    21,136.52x = 355,389,321.51
  5. Step 5: Solve for x
    x = 355,389,321.51/21,136.52
  6. Step 6: Final answer
    x = 16,814.00

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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.