Home / 28,326.25-39,063.40-20,662.57

Finding the Fourth Proportional to 28,326.25, 39,063.40 and 20,662.57

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Solution

The fourth proportional to 28,326.25, 39,063.40 and 20,662.57 is: 28,494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.25 : 39,063.40 = 20,662.57 : x
  2. Step 2: Convert to fraction form
    28,326.25/39,063.40 = 20,662.57/x
  3. Step 3: Cross multiply
    28,326.25x = 39,063.40 × 20,662.57
  4. Step 4: Simplify right side
    28,326.25x = 807,150,236.94
  5. Step 5: Solve for x
    x = 807,150,236.94/28,326.25
  6. Step 6: Final answer
    x = 28,494.78

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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.