Home / 20,855.28-31,282.92-7,014

Finding the Fourth Proportional to 20,855.28, 31,282.92 and 7,014

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Solution

The fourth proportional to 20,855.28, 31,282.92 and 7,014 is: 10,521

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.28 : 31,282.92 = 7,014 : x
  2. Step 2: Convert to fraction form
    20,855.28/31,282.92 = 7,014/x
  3. Step 3: Cross multiply
    20,855.28x = 31,282.92 × 7,014
  4. Step 4: Simplify right side
    20,855.28x = 219,418,400.88
  5. Step 5: Solve for x
    x = 219,418,400.88/20,855.28
  6. Step 6: Final answer
    x = 10,521

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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.