Home / 20,193.51-27,863.72-11,240.78

Finding the Fourth Proportional to 20,193.51, 27,863.72 and 11,240.78

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Solution

The fourth proportional to 20,193.51, 27,863.72 and 11,240.78 is: 15,510.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.51 : 27,863.72 = 11,240.78 : x
  2. Step 2: Convert to fraction form
    20,193.51/27,863.72 = 11,240.78/x
  3. Step 3: Cross multiply
    20,193.51x = 27,863.72 × 11,240.78
  4. Step 4: Simplify right side
    20,193.51x = 313,209,959.96
  5. Step 5: Solve for x
    x = 313,209,959.96/20,193.51
  6. Step 6: Final answer
    x = 15,510.43

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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.