Home / 13,816.37-20,724.53-3,428.12

Finding the Fourth Proportional to 13,816.37, 20,724.53 and 3,428.12

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Solution

The fourth proportional to 13,816.37, 20,724.53 and 3,428.12 is: 5,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.37 : 20,724.53 = 3,428.12 : x
  2. Step 2: Convert to fraction form
    13,816.37/20,724.53 = 3,428.12/x
  3. Step 3: Cross multiply
    13,816.37x = 20,724.53 × 3,428.12
  4. Step 4: Simplify right side
    13,816.37x = 71,046,055.02
  5. Step 5: Solve for x
    x = 71,046,055.02/13,816.37
  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.