Home / 20,765.75-31,116.72-14,093.58

Finding the Fourth Proportional to 20,765.75, 31,116.72 and 14,093.58

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Solution

The fourth proportional to 20,765.75, 31,116.72 and 14,093.58 is: 21,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.75 : 31,116.72 = 14,093.58 : x
  2. Step 2: Convert to fraction form
    20,765.75/31,116.72 = 14,093.58/x
  3. Step 3: Cross multiply
    20,765.75x = 31,116.72 × 14,093.58
  4. Step 4: Simplify right side
    20,765.75x = 438,545,982.66
  5. Step 5: Solve for x
    x = 438,545,982.66/20,765.75
  6. Step 6: Final answer
    x = 21,118.72

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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.