Home / 13,928.66-20,892.72-3,398.75

Finding the Fourth Proportional to 13,928.66, 20,892.72 and 3,398.75

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Solution

The fourth proportional to 13,928.66, 20,892.72 and 3,398.75 is: 5,098.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.66 : 20,892.72 = 3,398.75 : x
  2. Step 2: Convert to fraction form
    13,928.66/20,892.72 = 3,398.75/x
  3. Step 3: Cross multiply
    13,928.66x = 20,892.72 × 3,398.75
  4. Step 4: Simplify right side
    13,928.66x = 71,009,132.10
  5. Step 5: Solve for x
    x = 71,009,132.10/13,928.66
  6. Step 6: Final answer
    x = 5,098.06

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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.