Home / 20,712.36-28,581.96-11,759.64

Finding the Fourth Proportional to 20,712.36, 28,581.96 and 11,759.64

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Solution

The fourth proportional to 20,712.36, 28,581.96 and 11,759.64 is: 16,227.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.36 : 28,581.96 = 11,759.64 : x
  2. Step 2: Convert to fraction form
    20,712.36/28,581.96 = 11,759.64/x
  3. Step 3: Cross multiply
    20,712.36x = 28,581.96 × 11,759.64
  4. Step 4: Simplify right side
    20,712.36x = 336,113,560.09
  5. Step 5: Solve for x
    x = 336,113,560.09/20,712.36
  6. Step 6: Final answer
    x = 16,227.68

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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.