Home / 10,789.70-16,188.40-4,220.60

Finding the Fourth Proportional to 10,789.70, 16,188.40 and 4,220.60

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Solution

The fourth proportional to 10,789.70, 16,188.40 and 4,220.60 is: 6,332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,789.70 : 16,188.40 = 4,220.60 : x
  2. Step 2: Convert to fraction form
    10,789.70/16,188.40 = 4,220.60/x
  3. Step 3: Cross multiply
    10,789.70x = 16,188.40 × 4,220.60
  4. Step 4: Simplify right side
    10,789.70x = 68,324,761.04
  5. Step 5: Solve for x
    x = 68,324,761.04/10,789.70
  6. Step 6: Final answer
    x = 6,332.41

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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.