Home / 20,091.30-30,144.24-6,945

Finding the Fourth Proportional to 20,091.30, 30,144.24 and 6,945

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Solution

The fourth proportional to 20,091.30, 30,144.24 and 6,945 is: 10,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.30 : 30,144.24 = 6,945 : x
  2. Step 2: Convert to fraction form
    20,091.30/30,144.24 = 6,945/x
  3. Step 3: Cross multiply
    20,091.30x = 30,144.24 × 6,945
  4. Step 4: Simplify right side
    20,091.30x = 209,351,746.80
  5. Step 5: Solve for x
    x = 209,351,746.80/20,091.30
  6. Step 6: Final answer
    x = 10,420.02

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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.