Home / 20,933.69-31,404.83-6,894.54

Finding the Fourth Proportional to 20,933.69, 31,404.83 and 6,894.54

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Solution

The fourth proportional to 20,933.69, 31,404.83 and 6,894.54 is: 10,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.69 : 31,404.83 = 6,894.54 : x
  2. Step 2: Convert to fraction form
    20,933.69/31,404.83 = 6,894.54/x
  3. Step 3: Cross multiply
    20,933.69x = 31,404.83 × 6,894.54
  4. Step 4: Simplify right side
    20,933.69x = 216,521,699.60
  5. Step 5: Solve for x
    x = 216,521,699.60/20,933.69
  6. Step 6: Final answer
    x = 10,343.22

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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.