Home / 21,687.48-32,540.94-19,976.76

Finding the Fourth Proportional to 21,687.48, 32,540.94 and 19,976.76

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Solution

The fourth proportional to 21,687.48, 32,540.94 and 19,976.76 is: 29,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.48 : 32,540.94 = 19,976.76 : x
  2. Step 2: Convert to fraction form
    21,687.48/32,540.94 = 19,976.76/x
  3. Step 3: Cross multiply
    21,687.48x = 32,540.94 × 19,976.76
  4. Step 4: Simplify right side
    21,687.48x = 650,062,548.55
  5. Step 5: Solve for x
    x = 650,062,548.55/21,687.48
  6. Step 6: Final answer
    x = 29,974.09

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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.