Home / 12,231.25-18,326.43-11,776.21

Finding the Fourth Proportional to 12,231.25, 18,326.43 and 11,776.21

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Solution

The fourth proportional to 12,231.25, 18,326.43 and 11,776.21 is: 17,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.25 : 18,326.43 = 11,776.21 : x
  2. Step 2: Convert to fraction form
    12,231.25/18,326.43 = 11,776.21/x
  3. Step 3: Cross multiply
    12,231.25x = 18,326.43 × 11,776.21
  4. Step 4: Simplify right side
    12,231.25x = 215,815,888.23
  5. Step 5: Solve for x
    x = 215,815,888.23/12,231.25
  6. Step 6: Final answer
    x = 17,644.63

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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.