Home / 20,849.34-28,771.87-11,289.06

Finding the Fourth Proportional to 20,849.34, 28,771.87 and 11,289.06

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Solution

The fourth proportional to 20,849.34, 28,771.87 and 11,289.06 is: 15,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.34 : 28,771.87 = 11,289.06 : x
  2. Step 2: Convert to fraction form
    20,849.34/28,771.87 = 11,289.06/x
  3. Step 3: Cross multiply
    20,849.34x = 28,771.87 × 11,289.06
  4. Step 4: Simplify right side
    20,849.34x = 324,807,366.74
  5. Step 5: Solve for x
    x = 324,807,366.74/20,849.34
  6. Step 6: Final answer
    x = 15,578.78

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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.