Home / 28,657.29-39,549.57-15,912.96

Finding the Fourth Proportional to 28,657.29, 39,549.57 and 15,912.96

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Solution

The fourth proportional to 28,657.29, 39,549.57 and 15,912.96 is: 21,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.29 : 39,549.57 = 15,912.96 : x
  2. Step 2: Convert to fraction form
    28,657.29/39,549.57 = 15,912.96/x
  3. Step 3: Cross multiply
    28,657.29x = 39,549.57 × 15,912.96
  4. Step 4: Simplify right side
    28,657.29x = 629,350,517.44
  5. Step 5: Solve for x
    x = 629,350,517.44/28,657.29
  6. Step 6: Final answer
    x = 21,961.27

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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.