Home / 28,366.25-39,145.43-15,790.73

Finding the Fourth Proportional to 28,366.25, 39,145.43 and 15,790.73

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Solution

The fourth proportional to 28,366.25, 39,145.43 and 15,790.73 is: 21,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.25 : 39,145.43 = 15,790.73 : x
  2. Step 2: Convert to fraction form
    28,366.25/39,145.43 = 15,790.73/x
  3. Step 3: Cross multiply
    28,366.25x = 39,145.43 × 15,790.73
  4. Step 4: Simplify right side
    28,366.25x = 618,134,915.86
  5. Step 5: Solve for x
    x = 618,134,915.86/28,366.25
  6. Step 6: Final answer
    x = 21,791.21

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Half scale
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Double scale
Find fourth proportional to 28,367.25, 39,146.81 and 15,791.73
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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.