Home / 31,408.75-47,134.73-12,940.75

Finding the Fourth Proportional to 31,408.75, 47,134.73 and 12,940.75

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Solution

The fourth proportional to 31,408.75, 47,134.73 and 12,940.75 is: 19,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.75 : 47,134.73 = 12,940.75 : x
  2. Step 2: Convert to fraction form
    31,408.75/47,134.73 = 12,940.75/x
  3. Step 3: Cross multiply
    31,408.75x = 47,134.73 × 12,940.75
  4. Step 4: Simplify right side
    31,408.75x = 609,958,757.25
  5. Step 5: Solve for x
    x = 609,958,757.25/31,408.75
  6. Step 6: Final answer
    x = 19,420.03

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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.