Home / 13,185.72-18,188.10-8,151.48

Finding the Fourth Proportional to 13,185.72, 18,188.10 and 8,151.48

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Solution

The fourth proportional to 13,185.72, 18,188.10 and 8,151.48 is: 11,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.72 : 18,188.10 = 8,151.48 : x
  2. Step 2: Convert to fraction form
    13,185.72/18,188.10 = 8,151.48/x
  3. Step 3: Cross multiply
    13,185.72x = 18,188.10 × 8,151.48
  4. Step 4: Simplify right side
    13,185.72x = 148,259,933.39
  5. Step 5: Solve for x
    x = 148,259,933.39/13,185.72
  6. Step 6: Final answer
    x = 11,243.98

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