Home / 20,929.15-31,356.82-11,046.66

Finding the Fourth Proportional to 20,929.15, 31,356.82 and 11,046.66

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Solution

The fourth proportional to 20,929.15, 31,356.82 and 11,046.66 is: 16,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.15 : 31,356.82 = 11,046.66 : x
  2. Step 2: Convert to fraction form
    20,929.15/31,356.82 = 11,046.66/x
  3. Step 3: Cross multiply
    20,929.15x = 31,356.82 × 11,046.66
  4. Step 4: Simplify right side
    20,929.15x = 346,388,129.22
  5. Step 5: Solve for x
    x = 346,388,129.22/20,929.15
  6. Step 6: Final answer
    x = 16,550.51

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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.