Home / 18,825.48-28,348.22-13,929.56

Finding the Fourth Proportional to 18,825.48, 28,348.22 and 13,929.56

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Solution

The fourth proportional to 18,825.48, 28,348.22 and 13,929.56 is: 20,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.48 : 28,348.22 = 13,929.56 : x
  2. Step 2: Convert to fraction form
    18,825.48/28,348.22 = 13,929.56/x
  3. Step 3: Cross multiply
    18,825.48x = 28,348.22 × 13,929.56
  4. Step 4: Simplify right side
    18,825.48x = 394,878,231.38
  5. Step 5: Solve for x
    x = 394,878,231.38/18,825.48
  6. Step 6: Final answer
    x = 20,975.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.