Home / 12,109.60-18,164.40-11,234.80

Finding the Fourth Proportional to 12,109.60, 18,164.40 and 11,234.80

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Solution

The fourth proportional to 12,109.60, 18,164.40 and 11,234.80 is: 16,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.60 : 18,164.40 = 11,234.80 : x
  2. Step 2: Convert to fraction form
    12,109.60/18,164.40 = 11,234.80/x
  3. Step 3: Cross multiply
    12,109.60x = 18,164.40 × 11,234.80
  4. Step 4: Simplify right side
    12,109.60x = 204,073,401.12
  5. Step 5: Solve for x
    x = 204,073,401.12/12,109.60
  6. Step 6: Final answer
    x = 16,852.20

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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.