Home / 20,163.78-27,825.21-11,210.62

Finding the Fourth Proportional to 20,163.78, 27,825.21 and 11,210.62

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Solution

The fourth proportional to 20,163.78, 27,825.21 and 11,210.62 is: 15,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.78 : 27,825.21 = 11,210.62 : x
  2. Step 2: Convert to fraction form
    20,163.78/27,825.21 = 11,210.62/x
  3. Step 3: Cross multiply
    20,163.78x = 27,825.21 × 11,210.62
  4. Step 4: Simplify right side
    20,163.78x = 311,937,855.73
  5. Step 5: Solve for x
    x = 311,937,855.73/20,163.78
  6. Step 6: Final answer
    x = 15,470.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.