Home / 20,284.20-27,993.28-11,331.90

Finding the Fourth Proportional to 20,284.20, 27,993.28 and 11,331.90

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Solution

The fourth proportional to 20,284.20, 27,993.28 and 11,331.90 is: 15,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.20 : 27,993.28 = 11,331.90 : x
  2. Step 2: Convert to fraction form
    20,284.20/27,993.28 = 11,331.90/x
  3. Step 3: Cross multiply
    20,284.20x = 27,993.28 × 11,331.90
  4. Step 4: Simplify right side
    20,284.20x = 317,217,049.63
  5. Step 5: Solve for x
    x = 317,217,049.63/20,284.20
  6. Step 6: Final answer
    x = 15,638.63

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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.