Home / 28,067.96-38,716.98-20,505.05

Finding the Fourth Proportional to 28,067.96, 38,716.98 and 20,505.05

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Solution

The fourth proportional to 28,067.96, 38,716.98 and 20,505.05 is: 28,284.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.96 : 38,716.98 = 20,505.05 : x
  2. Step 2: Convert to fraction form
    28,067.96/38,716.98 = 20,505.05/x
  3. Step 3: Cross multiply
    28,067.96x = 38,716.98 × 20,505.05
  4. Step 4: Simplify right side
    28,067.96x = 793,893,610.75
  5. Step 5: Solve for x
    x = 793,893,610.75/28,067.96
  6. Step 6: Final answer
    x = 28,284.69

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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.