Home / 20,709.86-28,579.48-11,633.96

Finding the Fourth Proportional to 20,709.86, 28,579.48 and 11,633.96

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Solution

The fourth proportional to 20,709.86, 28,579.48 and 11,633.96 is: 16,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.86 : 28,579.48 = 11,633.96 : x
  2. Step 2: Convert to fraction form
    20,709.86/28,579.48 = 11,633.96/x
  3. Step 3: Cross multiply
    20,709.86x = 28,579.48 × 11,633.96
  4. Step 4: Simplify right side
    20,709.86x = 332,492,527.14
  5. Step 5: Solve for x
    x = 332,492,527.14/20,709.86
  6. Step 6: Final answer
    x = 16,054.79

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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.