Home / 14,441.60-21,662.40-8,220.80

Finding the Fourth Proportional to 14,441.60, 21,662.40 and 8,220.80

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Solution

The fourth proportional to 14,441.60, 21,662.40 and 8,220.80 is: 12,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,441.60 : 21,662.40 = 8,220.80 : x
  2. Step 2: Convert to fraction form
    14,441.60/21,662.40 = 8,220.80/x
  3. Step 3: Cross multiply
    14,441.60x = 21,662.40 × 8,220.80
  4. Step 4: Simplify right side
    14,441.60x = 178,082,257.92
  5. Step 5: Solve for x
    x = 178,082,257.92/14,441.60
  6. Step 6: Final answer
    x = 12,331.20

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Half scale
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Similar ratio
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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.