Home / 13,863.06-19,131.21-7,894.75

Finding the Fourth Proportional to 13,863.06, 19,131.21 and 7,894.75

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Solution

The fourth proportional to 13,863.06, 19,131.21 and 7,894.75 is: 10,894.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.06 : 19,131.21 = 7,894.75 : x
  2. Step 2: Convert to fraction form
    13,863.06/19,131.21 = 7,894.75/x
  3. Step 3: Cross multiply
    13,863.06x = 19,131.21 × 7,894.75
  4. Step 4: Simplify right side
    13,863.06x = 151,036,120.15
  5. Step 5: Solve for x
    x = 151,036,120.15/13,863.06
  6. Step 6: Final answer
    x = 10,894.86

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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.