Home / 20,302-30,462.12-12,904.54

Finding the Fourth Proportional to 20,302, 30,462.12 and 12,904.54

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Solution

The fourth proportional to 20,302, 30,462.12 and 12,904.54 is: 19,362.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302 : 30,462.12 = 12,904.54 : x
  2. Step 2: Convert to fraction form
    20,302/30,462.12 = 12,904.54/x
  3. Step 3: Cross multiply
    20,302x = 30,462.12 × 12,904.54
  4. Step 4: Simplify right side
    20,302x = 393,099,646.02
  5. Step 5: Solve for x
    x = 393,099,646.02/20,302
  6. Step 6: Final answer
    x = 19,362.61

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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.