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Finding the Fourth Proportional to 13,080.87, 19,621.30 and 3,846.87

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Solution

The fourth proportional to 13,080.87, 19,621.30 and 3,846.87 is: 5,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.87 : 19,621.30 = 3,846.87 : x
  2. Step 2: Convert to fraction form
    13,080.87/19,621.30 = 3,846.87/x
  3. Step 3: Cross multiply
    13,080.87x = 19,621.30 × 3,846.87
  4. Step 4: Simplify right side
    13,080.87x = 75,480,538.15
  5. Step 5: Solve for x
    x = 75,480,538.15/13,080.87
  6. Step 6: Final answer
    x = 5,770.30

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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.