Home / 39,157.20-58,745.34-12,503.21

Finding the Fourth Proportional to 39,157.20, 58,745.34 and 12,503.21

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Solution

The fourth proportional to 39,157.20, 58,745.34 and 12,503.21 is: 18,757.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.20 : 58,745.34 = 12,503.21 : x
  2. Step 2: Convert to fraction form
    39,157.20/58,745.34 = 12,503.21/x
  3. Step 3: Cross multiply
    39,157.20x = 58,745.34 × 12,503.21
  4. Step 4: Simplify right side
    39,157.20x = 734,505,028.81
  5. Step 5: Solve for x
    x = 734,505,028.81/39,157.20
  6. Step 6: Final answer
    x = 18,757.85

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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.