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Finding the Fourth Proportional to 12,998.88, 19,500.24 and 4,230.96

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Solution

The fourth proportional to 12,998.88, 19,500.24 and 4,230.96 is: 6,347.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.88 : 19,500.24 = 4,230.96 : x
  2. Step 2: Convert to fraction form
    12,998.88/19,500.24 = 4,230.96/x
  3. Step 3: Cross multiply
    12,998.88x = 19,500.24 × 4,230.96
  4. Step 4: Simplify right side
    12,998.88x = 82,504,735.43
  5. Step 5: Solve for x
    x = 82,504,735.43/12,998.88
  6. Step 6: Final answer
    x = 6,347.06

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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.