Home / 20,133.14-27,782.42-11,180.64

Finding the Fourth Proportional to 20,133.14, 27,782.42 and 11,180.64

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Solution

The fourth proportional to 20,133.14, 27,782.42 and 11,180.64 is: 15,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.14 : 27,782.42 = 11,180.64 : x
  2. Step 2: Convert to fraction form
    20,133.14/27,782.42 = 11,180.64/x
  3. Step 3: Cross multiply
    20,133.14x = 27,782.42 × 11,180.64
  4. Step 4: Simplify right side
    20,133.14x = 310,625,236.35
  5. Step 5: Solve for x
    x = 310,625,236.35/20,133.14
  6. Step 6: Final answer
    x = 15,428.55

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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.