Home / 13,404.60-20,109.79-4,520.82

Finding the Fourth Proportional to 13,404.60, 20,109.79 and 4,520.82

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Solution

The fourth proportional to 13,404.60, 20,109.79 and 4,520.82 is: 6,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.60 : 20,109.79 = 4,520.82 : x
  2. Step 2: Convert to fraction form
    13,404.60/20,109.79 = 4,520.82/x
  3. Step 3: Cross multiply
    13,404.60x = 20,109.79 × 4,520.82
  4. Step 4: Simplify right side
    13,404.60x = 90,912,729.53
  5. Step 5: Solve for x
    x = 90,912,729.53/13,404.60
  6. Step 6: Final answer
    x = 6,782.20

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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.