Home / 13,806.87-19,055.36-8,143.22

Finding the Fourth Proportional to 13,806.87, 19,055.36 and 8,143.22

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Solution

The fourth proportional to 13,806.87, 19,055.36 and 8,143.22 is: 11,238.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.87 : 19,055.36 = 8,143.22 : x
  2. Step 2: Convert to fraction form
    13,806.87/19,055.36 = 8,143.22/x
  3. Step 3: Cross multiply
    13,806.87x = 19,055.36 × 8,143.22
  4. Step 4: Simplify right side
    13,806.87x = 155,171,988.66
  5. Step 5: Solve for x
    x = 155,171,988.66/13,806.87
  6. Step 6: Final answer
    x = 11,238.75

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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.