Home / 20,186.45-27,857.10-11,233.81

Finding the Fourth Proportional to 20,186.45, 27,857.10 and 11,233.81

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Solution

The fourth proportional to 20,186.45, 27,857.10 and 11,233.81 is: 15,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.45 : 27,857.10 = 11,233.81 : x
  2. Step 2: Convert to fraction form
    20,186.45/27,857.10 = 11,233.81/x
  3. Step 3: Cross multiply
    20,186.45x = 27,857.10 × 11,233.81
  4. Step 4: Simplify right side
    20,186.45x = 312,941,288.80
  5. Step 5: Solve for x
    x = 312,941,288.80/20,186.45
  6. Step 6: Final answer
    x = 15,502.54

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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.