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Finding the Fourth Proportional to 11,757.95, 16,231.04 and 7,221.37

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Solution

The fourth proportional to 11,757.95, 16,231.04 and 7,221.37 is: 9,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,757.95 : 16,231.04 = 7,221.37 : x
  2. Step 2: Convert to fraction form
    11,757.95/16,231.04 = 7,221.37/x
  3. Step 3: Cross multiply
    11,757.95x = 16,231.04 × 7,221.37
  4. Step 4: Simplify right side
    11,757.95x = 117,210,340.73
  5. Step 5: Solve for x
    x = 117,210,340.73/11,757.95
  6. Step 6: Final answer
    x = 9,968.60

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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.