Home / 13,812.62-20,719.14-3,424.38

Finding the Fourth Proportional to 13,812.62, 20,719.14 and 3,424.38

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Solution

The fourth proportional to 13,812.62, 20,719.14 and 3,424.38 is: 5,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.62 : 20,719.14 = 3,424.38 : x
  2. Step 2: Convert to fraction form
    13,812.62/20,719.14 = 3,424.38/x
  3. Step 3: Cross multiply
    13,812.62x = 20,719.14 × 3,424.38
  4. Step 4: Simplify right side
    13,812.62x = 70,950,208.63
  5. Step 5: Solve for x
    x = 70,950,208.63/13,812.62
  6. Step 6: Final answer
    x = 5,136.62

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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.