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Finding the Fourth Proportional to 21,708.31, 32,562.11 and 6,917.03

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Solution

The fourth proportional to 21,708.31, 32,562.11 and 6,917.03 is: 10,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.31 : 32,562.11 = 6,917.03 : x
  2. Step 2: Convert to fraction form
    21,708.31/32,562.11 = 6,917.03/x
  3. Step 3: Cross multiply
    21,708.31x = 32,562.11 × 6,917.03
  4. Step 4: Simplify right side
    21,708.31x = 225,233,068.32
  5. Step 5: Solve for x
    x = 225,233,068.32/21,708.31
  6. Step 6: Final answer
    x = 10,375.43

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Why These Related Problems?

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