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Finding the Fourth Proportional to 21,053.92, 29,054.16 and 11,622.28

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Solution

The fourth proportional to 21,053.92, 29,054.16 and 11,622.28 is: 16,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.92 : 29,054.16 = 11,622.28 : x
  2. Step 2: Convert to fraction form
    21,053.92/29,054.16 = 11,622.28/x
  3. Step 3: Cross multiply
    21,053.92x = 29,054.16 × 11,622.28
  4. Step 4: Simplify right side
    21,053.92x = 337,675,582.68
  5. Step 5: Solve for x
    x = 337,675,582.68/21,053.92
  6. Step 6: Final answer
    x = 16,038.61

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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.