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Finding the Fourth Proportional to 18,616, 25,690.26 and 10,232.68

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Solution

The fourth proportional to 18,616, 25,690.26 and 10,232.68 is: 14,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616 : 25,690.26 = 10,232.68 : x
  2. Step 2: Convert to fraction form
    18,616/25,690.26 = 10,232.68/x
  3. Step 3: Cross multiply
    18,616x = 25,690.26 × 10,232.68
  4. Step 4: Simplify right side
    18,616x = 262,880,209.70
  5. Step 5: Solve for x
    x = 262,880,209.70/18,616
  6. Step 6: Final answer
    x = 14,121.20

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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.