Home / 12,327.60-18,491.40-4,119.60

Finding the Fourth Proportional to 12,327.60, 18,491.40 and 4,119.60

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Solution

The fourth proportional to 12,327.60, 18,491.40 and 4,119.60 is: 6,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,327.60 : 18,491.40 = 4,119.60 : x
  2. Step 2: Convert to fraction form
    12,327.60/18,491.40 = 4,119.60/x
  3. Step 3: Cross multiply
    12,327.60x = 18,491.40 × 4,119.60
  4. Step 4: Simplify right side
    12,327.60x = 76,177,171.44
  5. Step 5: Solve for x
    x = 76,177,171.44/12,327.60
  6. Step 6: Final answer
    x = 6,179.40

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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.