Home / 13,816.36-20,724.54-3,428.11

Finding the Fourth Proportional to 13,816.36, 20,724.54 and 3,428.11

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Solution

The fourth proportional to 13,816.36, 20,724.54 and 3,428.11 is: 5,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.36 : 20,724.54 = 3,428.11 : x
  2. Step 2: Convert to fraction form
    13,816.36/20,724.54 = 3,428.11/x
  3. Step 3: Cross multiply
    13,816.36x = 20,724.54 × 3,428.11
  4. Step 4: Simplify right side
    13,816.36x = 71,046,002.82
  5. Step 5: Solve for x
    x = 71,046,002.82/13,816.36
  6. Step 6: Final answer
    x = 5,142.17

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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.