Home / 13,810.62-20,715.90-3,949.89

Finding the Fourth Proportional to 13,810.62, 20,715.90 and 3,949.89

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Solution

The fourth proportional to 13,810.62, 20,715.90 and 3,949.89 is: 5,924.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.62 : 20,715.90 = 3,949.89 : x
  2. Step 2: Convert to fraction form
    13,810.62/20,715.90 = 3,949.89/x
  3. Step 3: Cross multiply
    13,810.62x = 20,715.90 × 3,949.89
  4. Step 4: Simplify right side
    13,810.62x = 81,825,526.25
  5. Step 5: Solve for x
    x = 81,825,526.25/13,810.62
  6. Step 6: Final answer
    x = 5,924.83

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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.