Home / 20,618.53-28,453.58-11,665.86

Finding the Fourth Proportional to 20,618.53, 28,453.58 and 11,665.86

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Solution

The fourth proportional to 20,618.53, 28,453.58 and 11,665.86 is: 16,098.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.53 : 28,453.58 = 11,665.86 : x
  2. Step 2: Convert to fraction form
    20,618.53/28,453.58 = 11,665.86/x
  3. Step 3: Cross multiply
    20,618.53x = 28,453.58 × 11,665.86
  4. Step 4: Simplify right side
    20,618.53x = 331,935,480.78
  5. Step 5: Solve for x
    x = 331,935,480.78/20,618.53
  6. Step 6: Final answer
    x = 16,098.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.