Home / 20,849.14-28,771.86-11,289.13

Finding the Fourth Proportional to 20,849.14, 28,771.86 and 11,289.13

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Solution

The fourth proportional to 20,849.14, 28,771.86 and 11,289.13 is: 15,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.14 : 28,771.86 = 11,289.13 : x
  2. Step 2: Convert to fraction form
    20,849.14/28,771.86 = 11,289.13/x
  3. Step 3: Cross multiply
    20,849.14x = 28,771.86 × 11,289.13
  4. Step 4: Simplify right side
    20,849.14x = 324,809,267.88
  5. Step 5: Solve for x
    x = 324,809,267.88/20,849.14
  6. Step 6: Final answer
    x = 15,579.02

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1.5x scale

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.