Home / 13,163.42-19,740.07-10,357.78

Finding the Fourth Proportional to 13,163.42, 19,740.07 and 10,357.78

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Solution

The fourth proportional to 13,163.42, 19,740.07 and 10,357.78 is: 15,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.42 : 19,740.07 = 10,357.78 : x
  2. Step 2: Convert to fraction form
    13,163.42/19,740.07 = 10,357.78/x
  3. Step 3: Cross multiply
    13,163.42x = 19,740.07 × 10,357.78
  4. Step 4: Simplify right side
    13,163.42x = 204,463,338.58
  5. Step 5: Solve for x
    x = 204,463,338.58/13,163.42
  6. Step 6: Final answer
    x = 15,532.69

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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.