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Finding the Fourth Proportional to 12,662.84, 18,999.81 and 6,738.32

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Solution

The fourth proportional to 12,662.84, 18,999.81 and 6,738.32 is: 10,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.84 : 18,999.81 = 6,738.32 : x
  2. Step 2: Convert to fraction form
    12,662.84/18,999.81 = 6,738.32/x
  3. Step 3: Cross multiply
    12,662.84x = 18,999.81 × 6,738.32
  4. Step 4: Simplify right side
    12,662.84x = 128,026,847.22
  5. Step 5: Solve for x
    x = 128,026,847.22/12,662.84
  6. Step 6: Final answer
    x = 10,110.44

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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.