Home / 13,404.20-20,079.41-6,390.99

Finding the Fourth Proportional to 13,404.20, 20,079.41 and 6,390.99

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Solution

The fourth proportional to 13,404.20, 20,079.41 and 6,390.99 is: 9,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.20 : 20,079.41 = 6,390.99 : x
  2. Step 2: Convert to fraction form
    13,404.20/20,079.41 = 6,390.99/x
  3. Step 3: Cross multiply
    13,404.20x = 20,079.41 × 6,390.99
  4. Step 4: Simplify right side
    13,404.20x = 128,327,276.56
  5. Step 5: Solve for x
    x = 128,327,276.56/13,404.20
  6. Step 6: Final answer
    x = 9,573.67

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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.