Home / 20,849.74-31,276.37-6,809.55

Finding the Fourth Proportional to 20,849.74, 31,276.37 and 6,809.55

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Solution

The fourth proportional to 20,849.74, 31,276.37 and 6,809.55 is: 10,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.74 : 31,276.37 = 6,809.55 : x
  2. Step 2: Convert to fraction form
    20,849.74/31,276.37 = 6,809.55/x
  3. Step 3: Cross multiply
    20,849.74x = 31,276.37 × 6,809.55
  4. Step 4: Simplify right side
    20,849.74x = 212,978,005.33
  5. Step 5: Solve for x
    x = 212,978,005.33/20,849.74
  6. Step 6: Final answer
    x = 10,214.90

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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.