Home / 28,867.75-39,837.62-15,619.75

Finding the Fourth Proportional to 28,867.75, 39,837.62 and 15,619.75

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Solution

The fourth proportional to 28,867.75, 39,837.62 and 15,619.75 is: 21,555.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,867.75 : 39,837.62 = 15,619.75 : x
  2. Step 2: Convert to fraction form
    28,867.75/39,837.62 = 15,619.75/x
  3. Step 3: Cross multiply
    28,867.75x = 39,837.62 × 15,619.75
  4. Step 4: Simplify right side
    28,867.75x = 622,253,665.00
  5. Step 5: Solve for x
    x = 622,253,665.00/28,867.75
  6. Step 6: Final answer
    x = 21,555.32

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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.