Home / 20,936.93-28,892.63-11,505.29

Finding the Fourth Proportional to 20,936.93, 28,892.63 and 11,505.29

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Solution

The fourth proportional to 20,936.93, 28,892.63 and 11,505.29 is: 15,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.93 : 28,892.63 = 11,505.29 : x
  2. Step 2: Convert to fraction form
    20,936.93/28,892.63 = 11,505.29/x
  3. Step 3: Cross multiply
    20,936.93x = 28,892.63 × 11,505.29
  4. Step 4: Simplify right side
    20,936.93x = 332,417,885.02
  5. Step 5: Solve for x
    x = 332,417,885.02/20,936.93
  6. Step 6: Final answer
    x = 15,877.11

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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.