Home / 20,968.80-28,936.84-11,537.32

Finding the Fourth Proportional to 20,968.80, 28,936.84 and 11,537.32

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Solution

The fourth proportional to 20,968.80, 28,936.84 and 11,537.32 is: 15,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.80 : 28,936.84 = 11,537.32 : x
  2. Step 2: Convert to fraction form
    20,968.80/28,936.84 = 11,537.32/x
  3. Step 3: Cross multiply
    20,968.80x = 28,936.84 × 11,537.32
  4. Step 4: Simplify right side
    20,968.80x = 333,853,582.87
  5. Step 5: Solve for x
    x = 333,853,582.87/20,968.80
  6. Step 6: Final answer
    x = 15,921.44

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1.5x scale

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.