Home / 10,790.70-16,189.90-4,221.60

Finding the Fourth Proportional to 10,790.70, 16,189.90 and 4,221.60

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Solution

The fourth proportional to 10,790.70, 16,189.90 and 4,221.60 is: 6,333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,790.70 : 16,189.90 = 4,221.60 : x
  2. Step 2: Convert to fraction form
    10,790.70/16,189.90 = 4,221.60/x
  3. Step 3: Cross multiply
    10,790.70x = 16,189.90 × 4,221.60
  4. Step 4: Simplify right side
    10,790.70x = 68,347,281.84
  5. Step 5: Solve for x
    x = 68,347,281.84/10,790.70
  6. Step 6: Final answer
    x = 6,333.91

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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.