Home / 16,212.09-22,371.62-9,138.36

Finding the Fourth Proportional to 16,212.09, 22,371.62 and 9,138.36

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Solution

The fourth proportional to 16,212.09, 22,371.62 and 9,138.36 is: 12,610.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,212.09 : 22,371.62 = 9,138.36 : x
  2. Step 2: Convert to fraction form
    16,212.09/22,371.62 = 9,138.36/x
  3. Step 3: Cross multiply
    16,212.09x = 22,371.62 × 9,138.36
  4. Step 4: Simplify right side
    16,212.09x = 204,439,871.65
  5. Step 5: Solve for x
    x = 204,439,871.65/16,212.09
  6. Step 6: Final answer
    x = 12,610.33

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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.