Home / 20,935.84-31,408.38-11,589.49

Finding the Fourth Proportional to 20,935.84, 31,408.38 and 11,589.49

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Solution

The fourth proportional to 20,935.84, 31,408.38 and 11,589.49 is: 17,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.84 : 31,408.38 = 11,589.49 : x
  2. Step 2: Convert to fraction form
    20,935.84/31,408.38 = 11,589.49/x
  3. Step 3: Cross multiply
    20,935.84x = 31,408.38 × 11,589.49
  4. Step 4: Simplify right side
    20,935.84x = 364,007,101.73
  5. Step 5: Solve for x
    x = 364,007,101.73/20,935.84
  6. Step 6: Final answer
    x = 17,386.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.