Home / 13,922.28-20,855.60-8,372.64

Finding the Fourth Proportional to 13,922.28, 20,855.60 and 8,372.64

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Solution

The fourth proportional to 13,922.28, 20,855.60 and 8,372.64 is: 12,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.28 : 20,855.60 = 8,372.64 : x
  2. Step 2: Convert to fraction form
    13,922.28/20,855.60 = 8,372.64/x
  3. Step 3: Cross multiply
    13,922.28x = 20,855.60 × 8,372.64
  4. Step 4: Simplify right side
    13,922.28x = 174,616,430.78
  5. Step 5: Solve for x
    x = 174,616,430.78/13,922.28
  6. Step 6: Final answer
    x = 12,542.23

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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.