Home / 13,863.79-19,127.37-7,894.19

Finding the Fourth Proportional to 13,863.79, 19,127.37 and 7,894.19

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Solution

The fourth proportional to 13,863.79, 19,127.37 and 7,894.19 is: 10,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.79 : 19,127.37 = 7,894.19 : x
  2. Step 2: Convert to fraction form
    13,863.79/19,127.37 = 7,894.19/x
  3. Step 3: Cross multiply
    13,863.79x = 19,127.37 × 7,894.19
  4. Step 4: Simplify right side
    13,863.79x = 150,995,170.40
  5. Step 5: Solve for x
    x = 150,995,170.40/13,863.79
  6. Step 6: Final answer
    x = 10,891.33

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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.