Home / 18,940.09-28,418.34-10,164.75

Finding the Fourth Proportional to 18,940.09, 28,418.34 and 10,164.75

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Solution

The fourth proportional to 18,940.09, 28,418.34 and 10,164.75 is: 15,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.09 : 28,418.34 = 10,164.75 : x
  2. Step 2: Convert to fraction form
    18,940.09/28,418.34 = 10,164.75/x
  3. Step 3: Cross multiply
    18,940.09x = 28,418.34 × 10,164.75
  4. Step 4: Simplify right side
    18,940.09x = 288,865,270.69
  5. Step 5: Solve for x
    x = 288,865,270.69/18,940.09
  6. Step 6: Final answer
    x = 15,251.53

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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.