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Finding the Fourth Proportional to 21,060.95, 29,063.93 and 11,629.31

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Solution

The fourth proportional to 21,060.95, 29,063.93 and 11,629.31 is: 16,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.95 : 29,063.93 = 11,629.31 : x
  2. Step 2: Convert to fraction form
    21,060.95/29,063.93 = 11,629.31/x
  3. Step 3: Cross multiply
    21,060.95x = 29,063.93 × 11,629.31
  4. Step 4: Simplify right side
    21,060.95x = 337,993,553.52
  5. Step 5: Solve for x
    x = 337,993,553.52/21,060.95
  6. Step 6: Final answer
    x = 16,048.35

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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.