Home / 20,284.34-27,992.31-11,209.45

Finding the Fourth Proportional to 20,284.34, 27,992.31 and 11,209.45

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Solution

The fourth proportional to 20,284.34, 27,992.31 and 11,209.45 is: 15,469.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.34 : 27,992.31 = 11,209.45 : x
  2. Step 2: Convert to fraction form
    20,284.34/27,992.31 = 11,209.45/x
  3. Step 3: Cross multiply
    20,284.34x = 27,992.31 × 11,209.45
  4. Step 4: Simplify right side
    20,284.34x = 313,778,399.33
  5. Step 5: Solve for x
    x = 313,778,399.33/20,284.34
  6. Step 6: Final answer
    x = 15,469.00

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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.