Home / 20,208.83-27,886.75-11,133.79

Finding the Fourth Proportional to 20,208.83, 27,886.75 and 11,133.79

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Solution

The fourth proportional to 20,208.83, 27,886.75 and 11,133.79 is: 15,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.83 : 27,886.75 = 11,133.79 : x
  2. Step 2: Convert to fraction form
    20,208.83/27,886.75 = 11,133.79/x
  3. Step 3: Cross multiply
    20,208.83x = 27,886.75 × 11,133.79
  4. Step 4: Simplify right side
    20,208.83x = 310,485,120.73
  5. Step 5: Solve for x
    x = 310,485,120.73/20,208.83
  6. Step 6: Final answer
    x = 15,363.84

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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.