Home / 20,121.03-30,180.13-5,329.62

Finding the Fourth Proportional to 20,121.03, 30,180.13 and 5,329.62

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Solution

The fourth proportional to 20,121.03, 30,180.13 and 5,329.62 is: 7,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.03 : 30,180.13 = 5,329.62 : x
  2. Step 2: Convert to fraction form
    20,121.03/30,180.13 = 5,329.62/x
  3. Step 3: Cross multiply
    20,121.03x = 30,180.13 × 5,329.62
  4. Step 4: Simplify right side
    20,121.03x = 160,848,611.13
  5. Step 5: Solve for x
    x = 160,848,611.13/20,121.03
  6. Step 6: Final answer
    x = 7,994.05

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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.