Home / 13,308-19,961.46-3,947.64

Finding the Fourth Proportional to 13,308, 19,961.46 and 3,947.64

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Solution

The fourth proportional to 13,308, 19,961.46 and 3,947.64 is: 5,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308 : 19,961.46 = 3,947.64 : x
  2. Step 2: Convert to fraction form
    13,308/19,961.46 = 3,947.64/x
  3. Step 3: Cross multiply
    13,308x = 19,961.46 × 3,947.64
  4. Step 4: Simplify right side
    13,308x = 78,800,657.95
  5. Step 5: Solve for x
    x = 78,800,657.95/13,308
  6. Step 6: Final answer
    x = 5,921.30

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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.