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Finding the Fourth Proportional to 21,906.63, 32,864.76 and 7,117.11

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Solution

The fourth proportional to 21,906.63, 32,864.76 and 7,117.11 is: 10,677.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.63 : 32,864.76 = 7,117.11 : x
  2. Step 2: Convert to fraction form
    21,906.63/32,864.76 = 7,117.11/x
  3. Step 3: Cross multiply
    21,906.63x = 32,864.76 × 7,117.11
  4. Step 4: Simplify right side
    21,906.63x = 233,902,112.04
  5. Step 5: Solve for x
    x = 233,902,112.04/21,906.63
  6. Step 6: Final answer
    x = 10,677.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.