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Finding the Fourth Proportional to 11,445.89, 17,179.76 and 7,071.89

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Solution

The fourth proportional to 11,445.89, 17,179.76 and 7,071.89 is: 10,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,445.89 : 17,179.76 = 7,071.89 : x
  2. Step 2: Convert to fraction form
    11,445.89/17,179.76 = 7,071.89/x
  3. Step 3: Cross multiply
    11,445.89x = 17,179.76 × 7,071.89
  4. Step 4: Simplify right side
    11,445.89x = 121,493,304.73
  5. Step 5: Solve for x
    x = 121,493,304.73/11,445.89
  6. Step 6: Final answer
    x = 10,614.58

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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.