Home / 20,769.36-28,659.09-11,817.01

Finding the Fourth Proportional to 20,769.36, 28,659.09 and 11,817.01

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Solution

The fourth proportional to 20,769.36, 28,659.09 and 11,817.01 is: 16,305.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.36 : 28,659.09 = 11,817.01 : x
  2. Step 2: Convert to fraction form
    20,769.36/28,659.09 = 11,817.01/x
  3. Step 3: Cross multiply
    20,769.36x = 28,659.09 × 11,817.01
  4. Step 4: Simplify right side
    20,769.36x = 338,664,739.92
  5. Step 5: Solve for x
    x = 338,664,739.92/20,769.36
  6. Step 6: Final answer
    x = 16,305.98

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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.