Home / 20,156.36-27,811.50-11,769.08

Finding the Fourth Proportional to 20,156.36, 27,811.50 and 11,769.08

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Solution

The fourth proportional to 20,156.36, 27,811.50 and 11,769.08 is: 16,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.36 : 27,811.50 = 11,769.08 : x
  2. Step 2: Convert to fraction form
    20,156.36/27,811.50 = 11,769.08/x
  3. Step 3: Cross multiply
    20,156.36x = 27,811.50 × 11,769.08
  4. Step 4: Simplify right side
    20,156.36x = 327,315,768.42
  5. Step 5: Solve for x
    x = 327,315,768.42/20,156.36
  6. Step 6: Final answer
    x = 16,238.83

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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.