Home / 28,277.89-39,025.25-15,702.73

Finding the Fourth Proportional to 28,277.89, 39,025.25 and 15,702.73

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Solution

The fourth proportional to 28,277.89, 39,025.25 and 15,702.73 is: 21,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.89 : 39,025.25 = 15,702.73 : x
  2. Step 2: Convert to fraction form
    28,277.89/39,025.25 = 15,702.73/x
  3. Step 3: Cross multiply
    28,277.89x = 39,025.25 × 15,702.73
  4. Step 4: Simplify right side
    28,277.89x = 612,802,963.93
  5. Step 5: Solve for x
    x = 612,802,963.93/28,277.89
  6. Step 6: Final answer
    x = 21,670.75

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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.