Home / 20,868.28-31,302.40-7,027

Finding the Fourth Proportional to 20,868.28, 31,302.40 and 7,027

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Solution

The fourth proportional to 20,868.28, 31,302.40 and 7,027 is: 10,540.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.28 : 31,302.40 = 7,027 : x
  2. Step 2: Convert to fraction form
    20,868.28/31,302.40 = 7,027/x
  3. Step 3: Cross multiply
    20,868.28x = 31,302.40 × 7,027
  4. Step 4: Simplify right side
    20,868.28x = 219,961,964.80
  5. Step 5: Solve for x
    x = 219,961,964.80/20,868.28
  6. Step 6: Final answer
    x = 10,540.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.