Home / 20,982.09-28,954.20-11,548.83

Finding the Fourth Proportional to 20,982.09, 28,954.20 and 11,548.83

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Solution

The fourth proportional to 20,982.09, 28,954.20 and 11,548.83 is: 15,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.09 : 28,954.20 = 11,548.83 : x
  2. Step 2: Convert to fraction form
    20,982.09/28,954.20 = 11,548.83/x
  3. Step 3: Cross multiply
    20,982.09x = 28,954.20 × 11,548.83
  4. Step 4: Simplify right side
    20,982.09x = 334,387,133.59
  5. Step 5: Solve for x
    x = 334,387,133.59/20,982.09
  6. Step 6: Final answer
    x = 15,936.79

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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.