Home / 20,111.56-27,757.28-11,161.93

Finding the Fourth Proportional to 20,111.56, 27,757.28 and 11,161.93

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Solution

The fourth proportional to 20,111.56, 27,757.28 and 11,161.93 is: 15,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.56 : 27,757.28 = 11,161.93 : x
  2. Step 2: Convert to fraction form
    20,111.56/27,757.28 = 11,161.93/x
  3. Step 3: Cross multiply
    20,111.56x = 27,757.28 × 11,161.93
  4. Step 4: Simplify right side
    20,111.56x = 309,824,816.35
  5. Step 5: Solve for x
    x = 309,824,816.35/20,111.56
  6. Step 6: Final answer
    x = 15,405.31

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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.