Home / 13,146.75-19,720.26-3,912.75

Finding the Fourth Proportional to 13,146.75, 19,720.26 and 3,912.75

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Solution

The fourth proportional to 13,146.75, 19,720.26 and 3,912.75 is: 5,869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.75 : 19,720.26 = 3,912.75 : x
  2. Step 2: Convert to fraction form
    13,146.75/19,720.26 = 3,912.75/x
  3. Step 3: Cross multiply
    13,146.75x = 19,720.26 × 3,912.75
  4. Step 4: Simplify right side
    13,146.75x = 77,160,447.32
  5. Step 5: Solve for x
    x = 77,160,447.32/13,146.75
  6. Step 6: Final answer
    x = 5,869.17

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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.