Home / 12,499.12-18,741.66-4,174.75

Finding the Fourth Proportional to 12,499.12, 18,741.66 and 4,174.75

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Solution

The fourth proportional to 12,499.12, 18,741.66 and 4,174.75 is: 6,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,499.12 : 18,741.66 = 4,174.75 : x
  2. Step 2: Convert to fraction form
    12,499.12/18,741.66 = 4,174.75/x
  3. Step 3: Cross multiply
    12,499.12x = 18,741.66 × 4,174.75
  4. Step 4: Simplify right side
    12,499.12x = 78,241,745.09
  5. Step 5: Solve for x
    x = 78,241,745.09/12,499.12
  6. Step 6: Final answer
    x = 6,259.78

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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.