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Finding the Fourth Proportional to 18,683.34, 25,789.23 and 12,394.50

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Solution

The fourth proportional to 18,683.34, 25,789.23 and 12,394.50 is: 17,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.34 : 25,789.23 = 12,394.50 : x
  2. Step 2: Convert to fraction form
    18,683.34/25,789.23 = 12,394.50/x
  3. Step 3: Cross multiply
    18,683.34x = 25,789.23 × 12,394.50
  4. Step 4: Simplify right side
    18,683.34x = 319,644,611.24
  5. Step 5: Solve for x
    x = 319,644,611.24/18,683.34
  6. Step 6: Final answer
    x = 17,108.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.