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Finding the Fourth Proportional to 13,643.16, 18,745.97 and 10,843.80

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Solution

The fourth proportional to 13,643.16, 18,745.97 and 10,843.80 is: 14,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.16 : 18,745.97 = 10,843.80 : x
  2. Step 2: Convert to fraction form
    13,643.16/18,745.97 = 10,843.80/x
  3. Step 3: Cross multiply
    13,643.16x = 18,745.97 × 10,843.80
  4. Step 4: Simplify right side
    13,643.16x = 203,277,495.27
  5. Step 5: Solve for x
    x = 203,277,495.27/13,643.16
  6. Step 6: Final answer
    x = 14,899.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.