Home / 20,908.44-28,858.12-12,529.80

Finding the Fourth Proportional to 20,908.44, 28,858.12 and 12,529.80

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Solution

The fourth proportional to 20,908.44, 28,858.12 and 12,529.80 is: 17,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.44 : 28,858.12 = 12,529.80 : x
  2. Step 2: Convert to fraction form
    20,908.44/28,858.12 = 12,529.80/x
  3. Step 3: Cross multiply
    20,908.44x = 28,858.12 × 12,529.80
  4. Step 4: Simplify right side
    20,908.44x = 361,586,471.98
  5. Step 5: Solve for x
    x = 361,586,471.98/20,908.44
  6. Step 6: Final answer
    x = 17,293.80

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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.