Home / 13,694.36-20,433.97-12,858.44

Finding the Fourth Proportional to 13,694.36, 20,433.97 and 12,858.44

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Solution

The fourth proportional to 13,694.36, 20,433.97 and 12,858.44 is: 19,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.36 : 20,433.97 = 12,858.44 : x
  2. Step 2: Convert to fraction form
    13,694.36/20,433.97 = 12,858.44/x
  3. Step 3: Cross multiply
    13,694.36x = 20,433.97 × 12,858.44
  4. Step 4: Simplify right side
    13,694.36x = 262,748,977.21
  5. Step 5: Solve for x
    x = 262,748,977.21/13,694.36
  6. Step 6: Final answer
    x = 19,186.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.