Home / 20,919.28-31,194.38-18,016.24

Finding the Fourth Proportional to 20,919.28, 31,194.38 and 18,016.24

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Solution

The fourth proportional to 20,919.28, 31,194.38 and 18,016.24 is: 26,865.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.28 : 31,194.38 = 18,016.24 : x
  2. Step 2: Convert to fraction form
    20,919.28/31,194.38 = 18,016.24/x
  3. Step 3: Cross multiply
    20,919.28x = 31,194.38 × 18,016.24
  4. Step 4: Simplify right side
    20,919.28x = 562,005,436.73
  5. Step 5: Solve for x
    x = 562,005,436.73/20,919.28
  6. Step 6: Final answer
    x = 26,865.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.