Home / 20,206.06-27,911.59-18,319.77

Finding the Fourth Proportional to 20,206.06, 27,911.59 and 18,319.77

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Solution

The fourth proportional to 20,206.06, 27,911.59 and 18,319.77 is: 25,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.06 : 27,911.59 = 18,319.77 : x
  2. Step 2: Convert to fraction form
    20,206.06/27,911.59 = 18,319.77/x
  3. Step 3: Cross multiply
    20,206.06x = 27,911.59 × 18,319.77
  4. Step 4: Simplify right side
    20,206.06x = 511,333,863.33
  5. Step 5: Solve for x
    x = 511,333,863.33/20,206.06
  6. Step 6: Final answer
    x = 25,305.97

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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.