Home / 20,936.25-31,409.82-6,898.41

Finding the Fourth Proportional to 20,936.25, 31,409.82 and 6,898.41

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Solution

The fourth proportional to 20,936.25, 31,409.82 and 6,898.41 is: 10,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.25 : 31,409.82 = 6,898.41 : x
  2. Step 2: Convert to fraction form
    20,936.25/31,409.82 = 6,898.41/x
  3. Step 3: Cross multiply
    20,936.25x = 31,409.82 × 6,898.41
  4. Step 4: Simplify right side
    20,936.25x = 216,677,816.39
  5. Step 5: Solve for x
    x = 216,677,816.39/20,936.25
  6. Step 6: Final answer
    x = 10,349.41

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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.