Home / 20,299.97-28,012.82-11,224.80

Finding the Fourth Proportional to 20,299.97, 28,012.82 and 11,224.80

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Solution

The fourth proportional to 20,299.97, 28,012.82 and 11,224.80 is: 15,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.97 : 28,012.82 = 11,224.80 : x
  2. Step 2: Convert to fraction form
    20,299.97/28,012.82 = 11,224.80/x
  3. Step 3: Cross multiply
    20,299.97x = 28,012.82 × 11,224.80
  4. Step 4: Simplify right side
    20,299.97x = 314,438,245.81
  5. Step 5: Solve for x
    x = 314,438,245.81/20,299.97
  6. Step 6: Final answer
    x = 15,489.59

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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.