Home / 12,185.80-18,327.30-10,922.20

Finding the Fourth Proportional to 12,185.80, 18,327.30 and 10,922.20

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Solution

The fourth proportional to 12,185.80, 18,327.30 and 10,922.20 is: 16,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.80 : 18,327.30 = 10,922.20 : x
  2. Step 2: Convert to fraction form
    12,185.80/18,327.30 = 10,922.20/x
  3. Step 3: Cross multiply
    12,185.80x = 18,327.30 × 10,922.20
  4. Step 4: Simplify right side
    12,185.80x = 200,174,436.06
  5. Step 5: Solve for x
    x = 200,174,436.06/12,185.80
  6. Step 6: Final answer
    x = 16,426.86

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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.