Home / 20,857.29-31,286.31-6,817.35

Finding the Fourth Proportional to 20,857.29, 31,286.31 and 6,817.35

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Solution

The fourth proportional to 20,857.29, 31,286.31 and 6,817.35 is: 10,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.29 : 31,286.31 = 6,817.35 : x
  2. Step 2: Convert to fraction form
    20,857.29/31,286.31 = 6,817.35/x
  3. Step 3: Cross multiply
    20,857.29x = 31,286.31 × 6,817.35
  4. Step 4: Simplify right side
    20,857.29x = 213,289,725.48
  5. Step 5: Solve for x
    x = 213,289,725.48/20,857.29
  6. Step 6: Final answer
    x = 10,226.15

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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.