Home / 21,067.76-31,603.08-7,226.48

Finding the Fourth Proportional to 21,067.76, 31,603.08 and 7,226.48

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Solution

The fourth proportional to 21,067.76, 31,603.08 and 7,226.48 is: 10,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.76 : 31,603.08 = 7,226.48 : x
  2. Step 2: Convert to fraction form
    21,067.76/31,603.08 = 7,226.48/x
  3. Step 3: Cross multiply
    21,067.76x = 31,603.08 × 7,226.48
  4. Step 4: Simplify right side
    21,067.76x = 228,379,025.56
  5. Step 5: Solve for x
    x = 228,379,025.56/21,067.76
  6. Step 6: Final answer
    x = 10,840.21

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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.