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Finding the Fourth Proportional to 21,060.77, 29,063.84 and 11,629.31

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Solution

The fourth proportional to 21,060.77, 29,063.84 and 11,629.31 is: 16,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.77 : 29,063.84 = 11,629.31 : x
  2. Step 2: Convert to fraction form
    21,060.77/29,063.84 = 11,629.31/x
  3. Step 3: Cross multiply
    21,060.77x = 29,063.84 × 11,629.31
  4. Step 4: Simplify right side
    21,060.77x = 337,992,201.68
  5. Step 5: Solve for x
    x = 337,992,201.68/21,060.77
  6. Step 6: Final answer
    x = 16,048.43

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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.