Home / 12,939.32-19,408.98-4,174.25

Finding the Fourth Proportional to 12,939.32, 19,408.98 and 4,174.25

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Solution

The fourth proportional to 12,939.32, 19,408.98 and 4,174.25 is: 6,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.32 : 19,408.98 = 4,174.25 : x
  2. Step 2: Convert to fraction form
    12,939.32/19,408.98 = 4,174.25/x
  3. Step 3: Cross multiply
    12,939.32x = 19,408.98 × 4,174.25
  4. Step 4: Simplify right side
    12,939.32x = 81,017,837.72
  5. Step 5: Solve for x
    x = 81,017,837.72/12,939.32
  6. Step 6: Final answer
    x = 6,261.37

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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.