Home / 20,827.98-31,202.73-10,285.66

Finding the Fourth Proportional to 20,827.98, 31,202.73 and 10,285.66

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Solution

The fourth proportional to 20,827.98, 31,202.73 and 10,285.66 is: 15,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.98 : 31,202.73 = 10,285.66 : x
  2. Step 2: Convert to fraction form
    20,827.98/31,202.73 = 10,285.66/x
  3. Step 3: Cross multiply
    20,827.98x = 31,202.73 × 10,285.66
  4. Step 4: Simplify right side
    20,827.98x = 320,940,464.41
  5. Step 5: Solve for x
    x = 320,940,464.41/20,827.98
  6. Step 6: Final answer
    x = 15,409.11

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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.