Home / 13,618.89-20,428.38-3,757.95

Finding the Fourth Proportional to 13,618.89, 20,428.38 and 3,757.95

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Solution

The fourth proportional to 13,618.89, 20,428.38 and 3,757.95 is: 5,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.89 : 20,428.38 = 3,757.95 : x
  2. Step 2: Convert to fraction form
    13,618.89/20,428.38 = 3,757.95/x
  3. Step 3: Cross multiply
    13,618.89x = 20,428.38 × 3,757.95
  4. Step 4: Simplify right side
    13,618.89x = 76,768,830.62
  5. Step 5: Solve for x
    x = 76,768,830.62/13,618.89
  6. Step 6: Final answer
    x = 5,636.94

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Why These Related Problems?

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