Home / 21,605.67-29,815.70-12,177.27

Finding the Fourth Proportional to 21,605.67, 29,815.70 and 12,177.27

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Solution

The fourth proportional to 21,605.67, 29,815.70 and 12,177.27 is: 16,804.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.67 : 29,815.70 = 12,177.27 : x
  2. Step 2: Convert to fraction form
    21,605.67/29,815.70 = 12,177.27/x
  3. Step 3: Cross multiply
    21,605.67x = 29,815.70 × 12,177.27
  4. Step 4: Simplify right side
    21,605.67x = 363,073,768.25
  5. Step 5: Solve for x
    x = 363,073,768.25/21,605.67
  6. Step 6: Final answer
    x = 16,804.56

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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.