Home / 10,883.10-16,336.80-8,428.80

Finding the Fourth Proportional to 10,883.10, 16,336.80 and 8,428.80

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Solution

The fourth proportional to 10,883.10, 16,336.80 and 8,428.80 is: 12,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,883.10 : 16,336.80 = 8,428.80 : x
  2. Step 2: Convert to fraction form
    10,883.10/16,336.80 = 8,428.80/x
  3. Step 3: Cross multiply
    10,883.10x = 16,336.80 × 8,428.80
  4. Step 4: Simplify right side
    10,883.10x = 137,699,619.84
  5. Step 5: Solve for x
    x = 137,699,619.84/10,883.10
  6. Step 6: Final answer
    x = 12,652.61

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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.