Home / 20,103.33-27,719.97-12,825.75

Finding the Fourth Proportional to 20,103.33, 27,719.97 and 12,825.75

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Solution

The fourth proportional to 20,103.33, 27,719.97 and 12,825.75 is: 17,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.33 : 27,719.97 = 12,825.75 : x
  2. Step 2: Convert to fraction form
    20,103.33/27,719.97 = 12,825.75/x
  3. Step 3: Cross multiply
    20,103.33x = 27,719.97 × 12,825.75
  4. Step 4: Simplify right side
    20,103.33x = 355,529,405.23
  5. Step 5: Solve for x
    x = 355,529,405.23/20,103.33
  6. Step 6: Final answer
    x = 17,685.10

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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.