Home / 20,873.52-28,805.40-11,923.80

Finding the Fourth Proportional to 20,873.52, 28,805.40 and 11,923.80

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Solution

The fourth proportional to 20,873.52, 28,805.40 and 11,923.80 is: 16,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.52 : 28,805.40 = 11,923.80 : x
  2. Step 2: Convert to fraction form
    20,873.52/28,805.40 = 11,923.80/x
  3. Step 3: Cross multiply
    20,873.52x = 28,805.40 × 11,923.80
  4. Step 4: Simplify right side
    20,873.52x = 343,469,828.52
  5. Step 5: Solve for x
    x = 343,469,828.52/20,873.52
  6. Step 6: Final answer
    x = 16,454.81

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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.