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Finding the Fourth Proportional to 21,053.98, 29,092.92 and 18,028.54

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Solution

The fourth proportional to 21,053.98, 29,092.92 and 18,028.54 is: 24,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.98 : 29,092.92 = 18,028.54 : x
  2. Step 2: Convert to fraction form
    21,053.98/29,092.92 = 18,028.54/x
  3. Step 3: Cross multiply
    21,053.98x = 29,092.92 × 18,028.54
  4. Step 4: Simplify right side
    21,053.98x = 524,502,871.94
  5. Step 5: Solve for x
    x = 524,502,871.94/21,053.98
  6. Step 6: Final answer
    x = 24,912.29

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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.