Home / 20,682.33-28,540.78-11,250.89

Finding the Fourth Proportional to 20,682.33, 28,540.78 and 11,250.89

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Solution

The fourth proportional to 20,682.33, 28,540.78 and 11,250.89 is: 15,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.33 : 28,540.78 = 11,250.89 : x
  2. Step 2: Convert to fraction form
    20,682.33/28,540.78 = 11,250.89/x
  3. Step 3: Cross multiply
    20,682.33x = 28,540.78 × 11,250.89
  4. Step 4: Simplify right side
    20,682.33x = 321,109,176.29
  5. Step 5: Solve for x
    x = 321,109,176.29/20,682.33
  6. Step 6: Final answer
    x = 15,525.77

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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.