Home / 13,989.44-21,067.44-12,618.56

Finding the Fourth Proportional to 13,989.44, 21,067.44 and 12,618.56

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Solution

The fourth proportional to 13,989.44, 21,067.44 and 12,618.56 is: 19,002.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.44 : 21,067.44 = 12,618.56 : x
  2. Step 2: Convert to fraction form
    13,989.44/21,067.44 = 12,618.56/x
  3. Step 3: Cross multiply
    13,989.44x = 21,067.44 × 12,618.56
  4. Step 4: Simplify right side
    13,989.44x = 265,840,755.69
  5. Step 5: Solve for x
    x = 265,840,755.69/13,989.44
  6. Step 6: Final answer
    x = 19,002.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.