Home / 13,816.71-20,725.07-3,428.46

Finding the Fourth Proportional to 13,816.71, 20,725.07 and 3,428.46

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Solution

The fourth proportional to 13,816.71, 20,725.07 and 3,428.46 is: 5,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.71 : 20,725.07 = 3,428.46 : x
  2. Step 2: Convert to fraction form
    13,816.71/20,725.07 = 3,428.46/x
  3. Step 3: Cross multiply
    13,816.71x = 20,725.07 × 3,428.46
  4. Step 4: Simplify right side
    13,816.71x = 71,055,056.35
  5. Step 5: Solve for x
    x = 71,055,056.35/13,816.71
  6. Step 6: Final answer
    x = 5,142.69

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1.5x scale

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.