Home / 28,261.73-39,003.57-15,517.07

Finding the Fourth Proportional to 28,261.73, 39,003.57 and 15,517.07

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Solution

The fourth proportional to 28,261.73, 39,003.57 and 15,517.07 is: 21,414.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.73 : 39,003.57 = 15,517.07 : x
  2. Step 2: Convert to fraction form
    28,261.73/39,003.57 = 15,517.07/x
  3. Step 3: Cross multiply
    28,261.73x = 39,003.57 × 15,517.07
  4. Step 4: Simplify right side
    28,261.73x = 605,220,930.92
  5. Step 5: Solve for x
    x = 605,220,930.92/28,261.73
  6. Step 6: Final answer
    x = 21,414.86

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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.