Home / 20,767.11-31,151.11-7,440.98

Finding the Fourth Proportional to 20,767.11, 31,151.11 and 7,440.98

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Solution

The fourth proportional to 20,767.11, 31,151.11 and 7,440.98 is: 11,161.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.11 : 31,151.11 = 7,440.98 : x
  2. Step 2: Convert to fraction form
    20,767.11/31,151.11 = 7,440.98/x
  3. Step 3: Cross multiply
    20,767.11x = 31,151.11 × 7,440.98
  4. Step 4: Simplify right side
    20,767.11x = 231,794,640.03
  5. Step 5: Solve for x
    x = 231,794,640.03/20,767.11
  6. Step 6: Final answer
    x = 11,161.62

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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.