Home / 12,138.09-18,192.01-4,338.33

Finding the Fourth Proportional to 12,138.09, 18,192.01 and 4,338.33

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Solution

The fourth proportional to 12,138.09, 18,192.01 and 4,338.33 is: 6,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.09 : 18,192.01 = 4,338.33 : x
  2. Step 2: Convert to fraction form
    12,138.09/18,192.01 = 4,338.33/x
  3. Step 3: Cross multiply
    12,138.09x = 18,192.01 × 4,338.33
  4. Step 4: Simplify right side
    12,138.09x = 78,922,942.74
  5. Step 5: Solve for x
    x = 78,922,942.74/12,138.09
  6. Step 6: Final answer
    x = 6,502.09

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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.