Home / 20,759.00-31,138.61-5,176.63

Finding the Fourth Proportional to 20,759.00, 31,138.61 and 5,176.63

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Solution

The fourth proportional to 20,759.00, 31,138.61 and 5,176.63 is: 7,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.00 : 31,138.61 = 5,176.63 : x
  2. Step 2: Convert to fraction form
    20,759.00/31,138.61 = 5,176.63/x
  3. Step 3: Cross multiply
    20,759.00x = 31,138.61 × 5,176.63
  4. Step 4: Simplify right side
    20,759.00x = 161,192,929.69
  5. Step 5: Solve for x
    x = 161,192,929.69/20,759.00
  6. Step 6: Final answer
    x = 7,764.97

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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.