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Finding the Fourth Proportional to 18,636.88, 27,942.36 and 6,946.96

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Solution

The fourth proportional to 18,636.88, 27,942.36 and 6,946.96 is: 10,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.88 : 27,942.36 = 6,946.96 : x
  2. Step 2: Convert to fraction form
    18,636.88/27,942.36 = 6,946.96/x
  3. Step 3: Cross multiply
    18,636.88x = 27,942.36 × 6,946.96
  4. Step 4: Simplify right side
    18,636.88x = 194,114,457.23
  5. Step 5: Solve for x
    x = 194,114,457.23/18,636.88
  6. Step 6: Final answer
    x = 10,415.61

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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.