Home / 12,163.11-18,246.55-5,143.15

Finding the Fourth Proportional to 12,163.11, 18,246.55 and 5,143.15

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Solution

The fourth proportional to 12,163.11, 18,246.55 and 5,143.15 is: 7,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.11 : 18,246.55 = 5,143.15 : x
  2. Step 2: Convert to fraction form
    12,163.11/18,246.55 = 5,143.15/x
  3. Step 3: Cross multiply
    12,163.11x = 18,246.55 × 5,143.15
  4. Step 4: Simplify right side
    12,163.11x = 93,844,660.59
  5. Step 5: Solve for x
    x = 93,844,660.59/12,163.11
  6. Step 6: Final answer
    x = 7,715.51

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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.