Home / 20,932.00-28,885.66-11,978.94

Finding the Fourth Proportional to 20,932.00, 28,885.66 and 11,978.94

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Solution

The fourth proportional to 20,932.00, 28,885.66 and 11,978.94 is: 16,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.00 : 28,885.66 = 11,978.94 : x
  2. Step 2: Convert to fraction form
    20,932.00/28,885.66 = 11,978.94/x
  3. Step 3: Cross multiply
    20,932.00x = 28,885.66 × 11,978.94
  4. Step 4: Simplify right side
    20,932.00x = 346,019,571.27
  5. Step 5: Solve for x
    x = 346,019,571.27/20,932.00
  6. Step 6: Final answer
    x = 16,530.65

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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.