Home / 20,914.92-28,860.84-11,959.56

Finding the Fourth Proportional to 20,914.92, 28,860.84 and 11,959.56

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Solution

The fourth proportional to 20,914.92, 28,860.84 and 11,959.56 is: 16,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.92 : 28,860.84 = 11,959.56 : x
  2. Step 2: Convert to fraction form
    20,914.92/28,860.84 = 11,959.56/x
  3. Step 3: Cross multiply
    20,914.92x = 28,860.84 × 11,959.56
  4. Step 4: Simplify right side
    20,914.92x = 345,162,947.63
  5. Step 5: Solve for x
    x = 345,162,947.63/20,914.92
  6. Step 6: Final answer
    x = 16,503.19

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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.