Home / 12,747.87-19,121.79-5,350.34

Finding the Fourth Proportional to 12,747.87, 19,121.79 and 5,350.34

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Solution

The fourth proportional to 12,747.87, 19,121.79 and 5,350.34 is: 8,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.87 : 19,121.79 = 5,350.34 : x
  2. Step 2: Convert to fraction form
    12,747.87/19,121.79 = 5,350.34/x
  3. Step 3: Cross multiply
    12,747.87x = 19,121.79 × 5,350.34
  4. Step 4: Simplify right side
    12,747.87x = 102,307,982.30
  5. Step 5: Solve for x
    x = 102,307,982.30/12,747.87
  6. Step 6: Final answer
    x = 8,025.50

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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.