Home / 20,137.53-30,180.78-11,377.38

Finding the Fourth Proportional to 20,137.53, 30,180.78 and 11,377.38

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Solution

The fourth proportional to 20,137.53, 30,180.78 and 11,377.38 is: 17,051.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.53 : 30,180.78 = 11,377.38 : x
  2. Step 2: Convert to fraction form
    20,137.53/30,180.78 = 11,377.38/x
  3. Step 3: Cross multiply
    20,137.53x = 30,180.78 × 11,377.38
  4. Step 4: Simplify right side
    20,137.53x = 343,378,202.76
  5. Step 5: Solve for x
    x = 343,378,202.76/20,137.53
  6. Step 6: Final answer
    x = 17,051.65

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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.