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Finding the Fourth Proportional to 18,619.44, 25,695 and 10,236

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Solution

The fourth proportional to 18,619.44, 25,695 and 10,236 is: 14,125.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.44 : 25,695 = 10,236 : x
  2. Step 2: Convert to fraction form
    18,619.44/25,695 = 10,236/x
  3. Step 3: Cross multiply
    18,619.44x = 25,695 × 10,236
  4. Step 4: Simplify right side
    18,619.44x = 263,014,020
  5. Step 5: Solve for x
    x = 263,014,020/18,619.44
  6. Step 6: Final answer
    x = 14,125.77

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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.