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Finding the Fourth Proportional to 22,311.89, 30,790.11 and 12,751.67

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Solution

The fourth proportional to 22,311.89, 30,790.11 and 12,751.67 is: 17,597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.89 : 30,790.11 = 12,751.67 : x
  2. Step 2: Convert to fraction form
    22,311.89/30,790.11 = 12,751.67/x
  3. Step 3: Cross multiply
    22,311.89x = 30,790.11 × 12,751.67
  4. Step 4: Simplify right side
    22,311.89x = 392,625,321.98
  5. Step 5: Solve for x
    x = 392,625,321.98/22,311.89
  6. Step 6: Final answer
    x = 17,597.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.