Home / 19,691.34-27,174.78-11,734.31

Finding the Fourth Proportional to 19,691.34, 27,174.78 and 11,734.31

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Solution

The fourth proportional to 19,691.34, 27,174.78 and 11,734.31 is: 16,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.34 : 27,174.78 = 11,734.31 : x
  2. Step 2: Convert to fraction form
    19,691.34/27,174.78 = 11,734.31/x
  3. Step 3: Cross multiply
    19,691.34x = 27,174.78 × 11,734.31
  4. Step 4: Simplify right side
    19,691.34x = 318,877,292.70
  5. Step 5: Solve for x
    x = 318,877,292.70/19,691.34
  6. Step 6: Final answer
    x = 16,193.78

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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.