Home / 13,161.87-19,716.78-6,912.54

Finding the Fourth Proportional to 13,161.87, 19,716.78 and 6,912.54

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Solution

The fourth proportional to 13,161.87, 19,716.78 and 6,912.54 is: 10,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.87 : 19,716.78 = 6,912.54 : x
  2. Step 2: Convert to fraction form
    13,161.87/19,716.78 = 6,912.54/x
  3. Step 3: Cross multiply
    13,161.87x = 19,716.78 × 6,912.54
  4. Step 4: Simplify right side
    13,161.87x = 136,293,030.42
  5. Step 5: Solve for x
    x = 136,293,030.42/13,161.87
  6. Step 6: Final answer
    x = 10,355.14

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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.