Home / 20,968.70-28,936.79-11,537.87

Finding the Fourth Proportional to 20,968.70, 28,936.79 and 11,537.87

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Solution

The fourth proportional to 20,968.70, 28,936.79 and 11,537.87 is: 15,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.70 : 28,936.79 = 11,537.87 : x
  2. Step 2: Convert to fraction form
    20,968.70/28,936.79 = 11,537.87/x
  3. Step 3: Cross multiply
    20,968.70x = 28,936.79 × 11,537.87
  4. Step 4: Simplify right side
    20,968.70x = 333,868,718.86
  5. Step 5: Solve for x
    x = 333,868,718.86/20,968.70
  6. Step 6: Final answer
    x = 15,922.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.