Home / 20,144.72-30,211.96-7,826

Finding the Fourth Proportional to 20,144.72, 30,211.96 and 7,826

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Solution

The fourth proportional to 20,144.72, 30,211.96 and 7,826 is: 11,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.72 : 30,211.96 = 7,826 : x
  2. Step 2: Convert to fraction form
    20,144.72/30,211.96 = 7,826/x
  3. Step 3: Cross multiply
    20,144.72x = 30,211.96 × 7,826
  4. Step 4: Simplify right side
    20,144.72x = 236,438,798.96
  5. Step 5: Solve for x
    x = 236,438,798.96/20,144.72
  6. Step 6: Final answer
    x = 11,737.01

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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.