Home / 28,893.75-39,873.62-15,645.75

Finding the Fourth Proportional to 28,893.75, 39,873.62 and 15,645.75

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Solution

The fourth proportional to 28,893.75, 39,873.62 and 15,645.75 is: 21,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.75 : 39,873.62 = 15,645.75 : x
  2. Step 2: Convert to fraction form
    28,893.75/39,873.62 = 15,645.75/x
  3. Step 3: Cross multiply
    28,893.75x = 39,873.62 × 15,645.75
  4. Step 4: Simplify right side
    28,893.75x = 623,852,611.89
  5. Step 5: Solve for x
    x = 623,852,611.89/28,893.75
  6. Step 6: Final answer
    x = 21,591.26

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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.