Home / 20,109.23-30,185.91-15,975.80

Finding the Fourth Proportional to 20,109.23, 30,185.91 and 15,975.80

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Solution

The fourth proportional to 20,109.23, 30,185.91 and 15,975.80 is: 23,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.23 : 30,185.91 = 15,975.80 : x
  2. Step 2: Convert to fraction form
    20,109.23/30,185.91 = 15,975.80/x
  3. Step 3: Cross multiply
    20,109.23x = 30,185.91 × 15,975.80
  4. Step 4: Simplify right side
    20,109.23x = 482,244,060.98
  5. Step 5: Solve for x
    x = 482,244,060.98/20,109.23
  6. Step 6: Final answer
    x = 23,981.23

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1.5x scale

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.