Home / 20,135.56-27,786.72-11,182.72

Finding the Fourth Proportional to 20,135.56, 27,786.72 and 11,182.72

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Solution

The fourth proportional to 20,135.56, 27,786.72 and 11,182.72 is: 15,431.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.56 : 27,786.72 = 11,182.72 : x
  2. Step 2: Convert to fraction form
    20,135.56/27,786.72 = 11,182.72/x
  3. Step 3: Cross multiply
    20,135.56x = 27,786.72 × 11,182.72
  4. Step 4: Simplify right side
    20,135.56x = 310,731,109.48
  5. Step 5: Solve for x
    x = 310,731,109.48/20,135.56
  6. Step 6: Final answer
    x = 15,431.96

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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.