Home / 13,928.27-20,892.11-3,398.39

Finding the Fourth Proportional to 13,928.27, 20,892.11 and 3,398.39

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Solution

The fourth proportional to 13,928.27, 20,892.11 and 3,398.39 is: 5,097.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.27 : 20,892.11 = 3,398.39 : x
  2. Step 2: Convert to fraction form
    13,928.27/20,892.11 = 3,398.39/x
  3. Step 3: Cross multiply
    13,928.27x = 20,892.11 × 3,398.39
  4. Step 4: Simplify right side
    13,928.27x = 70,999,416.25
  5. Step 5: Solve for x
    x = 70,999,416.25/13,928.27
  6. Step 6: Final answer
    x = 5,097.50

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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.