Home / 21,167.82-31,729.50-7,122.97

Finding the Fourth Proportional to 21,167.82, 31,729.50 and 7,122.97

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Solution

The fourth proportional to 21,167.82, 31,729.50 and 7,122.97 is: 10,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.82 : 31,729.50 = 7,122.97 : x
  2. Step 2: Convert to fraction form
    21,167.82/31,729.50 = 7,122.97/x
  3. Step 3: Cross multiply
    21,167.82x = 31,729.50 × 7,122.97
  4. Step 4: Simplify right side
    21,167.82x = 226,008,276.62
  5. Step 5: Solve for x
    x = 226,008,276.62/21,167.82
  6. Step 6: Final answer
    x = 10,676.97

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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.