Home / 13,181.67-18,190.16-7,879.41

Finding the Fourth Proportional to 13,181.67, 18,190.16 and 7,879.41

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Solution

The fourth proportional to 13,181.67, 18,190.16 and 7,879.41 is: 10,873.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.67 : 18,190.16 = 7,879.41 : x
  2. Step 2: Convert to fraction form
    13,181.67/18,190.16 = 7,879.41/x
  3. Step 3: Cross multiply
    13,181.67x = 18,190.16 × 7,879.41
  4. Step 4: Simplify right side
    13,181.67x = 143,327,728.61
  5. Step 5: Solve for x
    x = 143,327,728.61/13,181.67
  6. Step 6: Final answer
    x = 10,873.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.