Home / 21,635.30-32,456.50-6,840.75

Finding the Fourth Proportional to 21,635.30, 32,456.50 and 6,840.75

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Solution

The fourth proportional to 21,635.30, 32,456.50 and 6,840.75 is: 10,262.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.30 : 32,456.50 = 6,840.75 : x
  2. Step 2: Convert to fraction form
    21,635.30/32,456.50 = 6,840.75/x
  3. Step 3: Cross multiply
    21,635.30x = 32,456.50 × 6,840.75
  4. Step 4: Simplify right side
    21,635.30x = 222,026,906.98
  5. Step 5: Solve for x
    x = 222,026,906.98/21,635.30
  6. Step 6: Final answer
    x = 10,262.25

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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.