Home / 20,923.58-28,867.39-11,967.82

Finding the Fourth Proportional to 20,923.58, 28,867.39 and 11,967.82

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Solution

The fourth proportional to 20,923.58, 28,867.39 and 11,967.82 is: 16,511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.58 : 28,867.39 = 11,967.82 : x
  2. Step 2: Convert to fraction form
    20,923.58/28,867.39 = 11,967.82/x
  3. Step 3: Cross multiply
    20,923.58x = 28,867.39 × 11,967.82
  4. Step 4: Simplify right side
    20,923.58x = 345,479,625.30
  5. Step 5: Solve for x
    x = 345,479,625.30/20,923.58
  6. Step 6: Final answer
    x = 16,511.49

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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.