Home / 20,968.50-28,936.80-11,537.28

Finding the Fourth Proportional to 20,968.50, 28,936.80 and 11,537.28

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Solution

The fourth proportional to 20,968.50, 28,936.80 and 11,537.28 is: 15,921.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.50 : 28,936.80 = 11,537.28 : x
  2. Step 2: Convert to fraction form
    20,968.50/28,936.80 = 11,537.28/x
  3. Step 3: Cross multiply
    20,968.50x = 28,936.80 × 11,537.28
  4. Step 4: Simplify right side
    20,968.50x = 333,851,963.90
  5. Step 5: Solve for x
    x = 333,851,963.90/20,968.50
  6. Step 6: Final answer
    x = 15,921.59

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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.