Home / 12,939.14-19,408.82-7,092.56

Finding the Fourth Proportional to 12,939.14, 19,408.82 and 7,092.56

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Solution

The fourth proportional to 12,939.14, 19,408.82 and 7,092.56 is: 10,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.14 : 19,408.82 = 7,092.56 : x
  2. Step 2: Convert to fraction form
    12,939.14/19,408.82 = 7,092.56/x
  3. Step 3: Cross multiply
    12,939.14x = 19,408.82 × 7,092.56
  4. Step 4: Simplify right side
    12,939.14x = 137,658,220.38
  5. Step 5: Solve for x
    x = 137,658,220.38/12,939.14
  6. Step 6: Final answer
    x = 10,638.90

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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.