Home / 21,098.82-29,115.42-11,538.45

Finding the Fourth Proportional to 21,098.82, 29,115.42 and 11,538.45

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Solution

The fourth proportional to 21,098.82, 29,115.42 and 11,538.45 is: 15,922.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.82 : 29,115.42 = 11,538.45 : x
  2. Step 2: Convert to fraction form
    21,098.82/29,115.42 = 11,538.45/x
  3. Step 3: Cross multiply
    21,098.82x = 29,115.42 × 11,538.45
  4. Step 4: Simplify right side
    21,098.82x = 335,946,817.90
  5. Step 5: Solve for x
    x = 335,946,817.90/21,098.82
  6. Step 6: Final answer
    x = 15,922.54

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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.