Home / 20,857.69-31,283.28-6,817.61

Finding the Fourth Proportional to 20,857.69, 31,283.28 and 6,817.61

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Solution

The fourth proportional to 20,857.69, 31,283.28 and 6,817.61 is: 10,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.69 : 31,283.28 = 6,817.61 : x
  2. Step 2: Convert to fraction form
    20,857.69/31,283.28 = 6,817.61/x
  3. Step 3: Cross multiply
    20,857.69x = 31,283.28 × 6,817.61
  4. Step 4: Simplify right side
    20,857.69x = 213,277,202.56
  5. Step 5: Solve for x
    x = 213,277,202.56/20,857.69
  6. Step 6: Final answer
    x = 10,225.35

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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.