Home / 28,195.64-38,908.30-15,619.48

Finding the Fourth Proportional to 28,195.64, 38,908.30 and 15,619.48

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Solution

The fourth proportional to 28,195.64, 38,908.30 and 15,619.48 is: 21,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.64 : 38,908.30 = 15,619.48 : x
  2. Step 2: Convert to fraction form
    28,195.64/38,908.30 = 15,619.48/x
  3. Step 3: Cross multiply
    28,195.64x = 38,908.30 × 15,619.48
  4. Step 4: Simplify right side
    28,195.64x = 607,727,413.68
  5. Step 5: Solve for x
    x = 607,727,413.68/28,195.64
  6. Step 6: Final answer
    x = 21,553.95

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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.