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Finding the Fourth Proportional to 18,636.46, 27,944.96 and 6,940.06

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Solution

The fourth proportional to 18,636.46, 27,944.96 and 6,940.06 is: 10,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.46 : 27,944.96 = 6,940.06 : x
  2. Step 2: Convert to fraction form
    18,636.46/27,944.96 = 6,940.06/x
  3. Step 3: Cross multiply
    18,636.46x = 27,944.96 × 6,940.06
  4. Step 4: Simplify right side
    18,636.46x = 193,939,699.10
  5. Step 5: Solve for x
    x = 193,939,699.10/18,636.46
  6. Step 6: Final answer
    x = 10,406.47

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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.