Home / 13,299.36-19,951.68-3,939.60

Finding the Fourth Proportional to 13,299.36, 19,951.68 and 3,939.60

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Solution

The fourth proportional to 13,299.36, 19,951.68 and 3,939.60 is: 5,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.36 : 19,951.68 = 3,939.60 : x
  2. Step 2: Convert to fraction form
    13,299.36/19,951.68 = 3,939.60/x
  3. Step 3: Cross multiply
    13,299.36x = 19,951.68 × 3,939.60
  4. Step 4: Simplify right side
    13,299.36x = 78,601,638.53
  5. Step 5: Solve for x
    x = 78,601,638.53/13,299.36
  6. Step 6: Final answer
    x = 5,910.18

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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.