Home / 20,144.15-30,013.81-19,012.38

Finding the Fourth Proportional to 20,144.15, 30,013.81 and 19,012.38

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Solution

The fourth proportional to 20,144.15, 30,013.81 and 19,012.38 is: 28,327.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.15 : 30,013.81 = 19,012.38 : x
  2. Step 2: Convert to fraction form
    20,144.15/30,013.81 = 19,012.38/x
  3. Step 3: Cross multiply
    20,144.15x = 30,013.81 × 19,012.38
  4. Step 4: Simplify right side
    20,144.15x = 570,633,960.97
  5. Step 5: Solve for x
    x = 570,633,960.97/20,144.15
  6. Step 6: Final answer
    x = 28,327.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.