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Finding the Fourth Proportional to 12,611.73, 18,888.42 and 12,174.33

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Solution

The fourth proportional to 12,611.73, 18,888.42 and 12,174.33 is: 18,233.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.73 : 18,888.42 = 12,174.33 : x
  2. Step 2: Convert to fraction form
    12,611.73/18,888.42 = 12,174.33/x
  3. Step 3: Cross multiply
    12,611.73x = 18,888.42 × 12,174.33
  4. Step 4: Simplify right side
    12,611.73x = 229,953,858.26
  5. Step 5: Solve for x
    x = 229,953,858.26/12,611.73
  6. Step 6: Final answer
    x = 18,233.33

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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.