Home / 12,645.16-18,965.58-3,409

Finding the Fourth Proportional to 12,645.16, 18,965.58 and 3,409

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Solution

The fourth proportional to 12,645.16, 18,965.58 and 3,409 is: 5,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.16 : 18,965.58 = 3,409 : x
  2. Step 2: Convert to fraction form
    12,645.16/18,965.58 = 3,409/x
  3. Step 3: Cross multiply
    12,645.16x = 18,965.58 × 3,409
  4. Step 4: Simplify right side
    12,645.16x = 64,653,662.22
  5. Step 5: Solve for x
    x = 64,653,662.22/12,645.16
  6. Step 6: Final answer
    x = 5,112.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.