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Finding the Fourth Proportional to 14,636.89, 20,198.78 and 7,922.45

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Solution

The fourth proportional to 14,636.89, 20,198.78 and 7,922.45 is: 10,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,636.89 : 20,198.78 = 7,922.45 : x
  2. Step 2: Convert to fraction form
    14,636.89/20,198.78 = 7,922.45/x
  3. Step 3: Cross multiply
    14,636.89x = 20,198.78 × 7,922.45
  4. Step 4: Simplify right side
    14,636.89x = 160,023,785.00
  5. Step 5: Solve for x
    x = 160,023,785.00/14,636.89
  6. Step 6: Final answer
    x = 10,932.91

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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.