Home / 20,149.40-30,224.10-13,928.60

Finding the Fourth Proportional to 20,149.40, 30,224.10 and 13,928.60

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Solution

The fourth proportional to 20,149.40, 30,224.10 and 13,928.60 is: 20,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.40 : 30,224.10 = 13,928.60 : x
  2. Step 2: Convert to fraction form
    20,149.40/30,224.10 = 13,928.60/x
  3. Step 3: Cross multiply
    20,149.40x = 30,224.10 × 13,928.60
  4. Step 4: Simplify right side
    20,149.40x = 420,979,399.26
  5. Step 5: Solve for x
    x = 420,979,399.26/20,149.40
  6. Step 6: Final answer
    x = 20,892.90

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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.