Home / 20,481.84-28,267.68-11,986.56

Finding the Fourth Proportional to 20,481.84, 28,267.68 and 11,986.56

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Solution

The fourth proportional to 20,481.84, 28,267.68 and 11,986.56 is: 16,543.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.84 : 28,267.68 = 11,986.56 : x
  2. Step 2: Convert to fraction form
    20,481.84/28,267.68 = 11,986.56/x
  3. Step 3: Cross multiply
    20,481.84x = 28,267.68 × 11,986.56
  4. Step 4: Simplify right side
    20,481.84x = 338,832,242.38
  5. Step 5: Solve for x
    x = 338,832,242.38/20,481.84
  6. Step 6: Final answer
    x = 16,543.06

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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.