Home / 20,722.10-31,083.15-6,871.10

Finding the Fourth Proportional to 20,722.10, 31,083.15 and 6,871.10

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Solution

The fourth proportional to 20,722.10, 31,083.15 and 6,871.10 is: 10,306.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.10 : 31,083.15 = 6,871.10 : x
  2. Step 2: Convert to fraction form
    20,722.10/31,083.15 = 6,871.10/x
  3. Step 3: Cross multiply
    20,722.10x = 31,083.15 × 6,871.10
  4. Step 4: Simplify right side
    20,722.10x = 213,575,431.97
  5. Step 5: Solve for x
    x = 213,575,431.97/20,722.10
  6. Step 6: Final answer
    x = 10,306.65

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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.