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Finding the Fourth Proportional to 21,092, 29,107.44 and 13,652.96

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Solution

The fourth proportional to 21,092, 29,107.44 and 13,652.96 is: 18,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092 : 29,107.44 = 13,652.96 : x
  2. Step 2: Convert to fraction form
    21,092/29,107.44 = 13,652.96/x
  3. Step 3: Cross multiply
    21,092x = 29,107.44 × 13,652.96
  4. Step 4: Simplify right side
    21,092x = 397,402,714.02
  5. Step 5: Solve for x
    x = 397,402,714.02/21,092
  6. Step 6: Final answer
    x = 18,841.40

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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.