Home / 11,030.80-16,546.20-8,406.40

Finding the Fourth Proportional to 11,030.80, 16,546.20 and 8,406.40

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Solution

The fourth proportional to 11,030.80, 16,546.20 and 8,406.40 is: 12,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,030.80 : 16,546.20 = 8,406.40 : x
  2. Step 2: Convert to fraction form
    11,030.80/16,546.20 = 8,406.40/x
  3. Step 3: Cross multiply
    11,030.80x = 16,546.20 × 8,406.40
  4. Step 4: Simplify right side
    11,030.80x = 139,093,975.68
  5. Step 5: Solve for x
    x = 139,093,975.68/11,030.80
  6. Step 6: Final answer
    x = 12,609.60

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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.