Home / 20,620.26-30,945.94-15,087.88

Finding the Fourth Proportional to 20,620.26, 30,945.94 and 15,087.88

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Solution

The fourth proportional to 20,620.26, 30,945.94 and 15,087.88 is: 22,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.26 : 30,945.94 = 15,087.88 : x
  2. Step 2: Convert to fraction form
    20,620.26/30,945.94 = 15,087.88/x
  3. Step 3: Cross multiply
    20,620.26x = 30,945.94 × 15,087.88
  4. Step 4: Simplify right side
    20,620.26x = 466,908,399.04
  5. Step 5: Solve for x
    x = 466,908,399.04/20,620.26
  6. Step 6: Final answer
    x = 22,643.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.