Home / 20,835.09-28,754.21-11,882.97

Finding the Fourth Proportional to 20,835.09, 28,754.21 and 11,882.97

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Solution

The fourth proportional to 20,835.09, 28,754.21 and 11,882.97 is: 16,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.09 : 28,754.21 = 11,882.97 : x
  2. Step 2: Convert to fraction form
    20,835.09/28,754.21 = 11,882.97/x
  3. Step 3: Cross multiply
    20,835.09x = 28,754.21 × 11,882.97
  4. Step 4: Simplify right side
    20,835.09x = 341,685,355.39
  5. Step 5: Solve for x
    x = 341,685,355.39/20,835.09
  6. Step 6: Final answer
    x = 16,399.51

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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.