Home / 12,606.20-18,909.30-8,228.60

Finding the Fourth Proportional to 12,606.20, 18,909.30 and 8,228.60

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Solution

The fourth proportional to 12,606.20, 18,909.30 and 8,228.60 is: 12,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.20 : 18,909.30 = 8,228.60 : x
  2. Step 2: Convert to fraction form
    12,606.20/18,909.30 = 8,228.60/x
  3. Step 3: Cross multiply
    12,606.20x = 18,909.30 × 8,228.60
  4. Step 4: Simplify right side
    12,606.20x = 155,597,065.98
  5. Step 5: Solve for x
    x = 155,597,065.98/12,606.20
  6. Step 6: Final answer
    x = 12,342.90

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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.