Home / 28,198-38,914.52-15,622.75

Finding the Fourth Proportional to 28,198, 38,914.52 and 15,622.75

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Solution

The fourth proportional to 28,198, 38,914.52 and 15,622.75 is: 21,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198 : 38,914.52 = 15,622.75 : x
  2. Step 2: Convert to fraction form
    28,198/38,914.52 = 15,622.75/x
  3. Step 3: Cross multiply
    28,198x = 38,914.52 × 15,622.75
  4. Step 4: Simplify right side
    28,198x = 607,951,739.22
  5. Step 5: Solve for x
    x = 607,951,739.22/28,198
  6. Step 6: Final answer
    x = 21,560.10

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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.