Home / 13,812.87-20,719.29-3,424.62

Finding the Fourth Proportional to 13,812.87, 20,719.29 and 3,424.62

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Solution

The fourth proportional to 13,812.87, 20,719.29 and 3,424.62 is: 5,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.87 : 20,719.29 = 3,424.62 : x
  2. Step 2: Convert to fraction form
    13,812.87/20,719.29 = 3,424.62/x
  3. Step 3: Cross multiply
    13,812.87x = 20,719.29 × 3,424.62
  4. Step 4: Simplify right side
    13,812.87x = 70,955,694.92
  5. Step 5: Solve for x
    x = 70,955,694.92/13,812.87
  6. Step 6: Final answer
    x = 5,136.93

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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.