Home / 20,707.11-31,040.42-8,222.99

Finding the Fourth Proportional to 20,707.11, 31,040.42 and 8,222.99

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Solution

The fourth proportional to 20,707.11, 31,040.42 and 8,222.99 is: 12,326.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.11 : 31,040.42 = 8,222.99 : x
  2. Step 2: Convert to fraction form
    20,707.11/31,040.42 = 8,222.99/x
  3. Step 3: Cross multiply
    20,707.11x = 31,040.42 × 8,222.99
  4. Step 4: Simplify right side
    20,707.11x = 255,244,866.94
  5. Step 5: Solve for x
    x = 255,244,866.94/20,707.11
  6. Step 6: Final answer
    x = 12,326.44

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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.