Home / 12,650.72-18,982.56-6,812.96

Finding the Fourth Proportional to 12,650.72, 18,982.56 and 6,812.96

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Solution

The fourth proportional to 12,650.72, 18,982.56 and 6,812.96 is: 10,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.72 : 18,982.56 = 6,812.96 : x
  2. Step 2: Convert to fraction form
    12,650.72/18,982.56 = 6,812.96/x
  3. Step 3: Cross multiply
    12,650.72x = 18,982.56 × 6,812.96
  4. Step 4: Simplify right side
    12,650.72x = 129,327,421.98
  5. Step 5: Solve for x
    x = 129,327,421.98/12,650.72
  6. Step 6: Final answer
    x = 10,222.93

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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.