Home / 12,136.38-18,205.86-3,816.66

Finding the Fourth Proportional to 12,136.38, 18,205.86 and 3,816.66

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Solution

The fourth proportional to 12,136.38, 18,205.86 and 3,816.66 is: 5,725.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.38 : 18,205.86 = 3,816.66 : x
  2. Step 2: Convert to fraction form
    12,136.38/18,205.86 = 3,816.66/x
  3. Step 3: Cross multiply
    12,136.38x = 18,205.86 × 3,816.66
  4. Step 4: Simplify right side
    12,136.38x = 69,485,577.63
  5. Step 5: Solve for x
    x = 69,485,577.63/12,136.38
  6. Step 6: Final answer
    x = 5,725.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.