Home / 20,171.77-27,825.68-12,103.34

Finding the Fourth Proportional to 20,171.77, 27,825.68 and 12,103.34

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Solution

The fourth proportional to 20,171.77, 27,825.68 and 12,103.34 is: 16,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.77 : 27,825.68 = 12,103.34 : x
  2. Step 2: Convert to fraction form
    20,171.77/27,825.68 = 12,103.34/x
  3. Step 3: Cross multiply
    20,171.77x = 27,825.68 × 12,103.34
  4. Step 4: Simplify right side
    20,171.77x = 336,783,526.64
  5. Step 5: Solve for x
    x = 336,783,526.64/20,171.77
  6. Step 6: Final answer
    x = 16,695.78

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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.