Home / 13,756.20-20,634.30-13,122.60

Finding the Fourth Proportional to 13,756.20, 20,634.30 and 13,122.60

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Solution

The fourth proportional to 13,756.20, 20,634.30 and 13,122.60 is: 19,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.20 : 20,634.30 = 13,122.60 : x
  2. Step 2: Convert to fraction form
    13,756.20/20,634.30 = 13,122.60/x
  3. Step 3: Cross multiply
    13,756.20x = 20,634.30 × 13,122.60
  4. Step 4: Simplify right side
    13,756.20x = 270,775,665.18
  5. Step 5: Solve for x
    x = 270,775,665.18/13,756.20
  6. Step 6: Final answer
    x = 19,683.90

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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.