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Finding the Fourth Proportional to 21,109.01, 29,129.24 and 11,546.98

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Solution

The fourth proportional to 21,109.01, 29,129.24 and 11,546.98 is: 15,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.01 : 29,129.24 = 11,546.98 : x
  2. Step 2: Convert to fraction form
    21,109.01/29,129.24 = 11,546.98/x
  3. Step 3: Cross multiply
    21,109.01x = 29,129.24 × 11,546.98
  4. Step 4: Simplify right side
    21,109.01x = 336,354,707.74
  5. Step 5: Solve for x
    x = 336,354,707.74/21,109.01
  6. Step 6: Final answer
    x = 15,934.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.