Home / 14,942.82-20,620.90-8,655.78

Finding the Fourth Proportional to 14,942.82, 20,620.90 and 8,655.78

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Solution

The fourth proportional to 14,942.82, 20,620.90 and 8,655.78 is: 11,944.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,942.82 : 20,620.90 = 8,655.78 : x
  2. Step 2: Convert to fraction form
    14,942.82/20,620.90 = 8,655.78/x
  3. Step 3: Cross multiply
    14,942.82x = 20,620.90 × 8,655.78
  4. Step 4: Simplify right side
    14,942.82x = 178,489,973.80
  5. Step 5: Solve for x
    x = 178,489,973.80/14,942.82
  6. Step 6: Final answer
    x = 11,944.87

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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.