Home / 20,936.94-28,892.64-11,505.30

Finding the Fourth Proportional to 20,936.94, 28,892.64 and 11,505.30

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Solution

The fourth proportional to 20,936.94, 28,892.64 and 11,505.30 is: 15,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.94 : 28,892.64 = 11,505.30 : x
  2. Step 2: Convert to fraction form
    20,936.94/28,892.64 = 11,505.30/x
  3. Step 3: Cross multiply
    20,936.94x = 28,892.64 × 11,505.30
  4. Step 4: Simplify right side
    20,936.94x = 332,418,490.99
  5. Step 5: Solve for x
    x = 332,418,490.99/20,936.94
  6. Step 6: Final answer
    x = 15,877.13

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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.