Home / 13,067.96-18,126.31-12,619.90

Finding the Fourth Proportional to 13,067.96, 18,126.31 and 12,619.90

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Solution

The fourth proportional to 13,067.96, 18,126.31 and 12,619.90 is: 17,504.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,067.96 : 18,126.31 = 12,619.90 : x
  2. Step 2: Convert to fraction form
    13,067.96/18,126.31 = 12,619.90/x
  3. Step 3: Cross multiply
    13,067.96x = 18,126.31 × 12,619.90
  4. Step 4: Simplify right side
    13,067.96x = 228,752,142.70
  5. Step 5: Solve for x
    x = 228,752,142.70/13,067.96
  6. Step 6: Final answer
    x = 17,504.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.