Home / 18,676.38-28,014.56-6,831.72

Finding the Fourth Proportional to 18,676.38, 28,014.56 and 6,831.72

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Solution

The fourth proportional to 18,676.38, 28,014.56 and 6,831.72 is: 10,247.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.38 : 28,014.56 = 6,831.72 : x
  2. Step 2: Convert to fraction form
    18,676.38/28,014.56 = 6,831.72/x
  3. Step 3: Cross multiply
    18,676.38x = 28,014.56 × 6,831.72
  4. Step 4: Simplify right side
    18,676.38x = 191,387,629.84
  5. Step 5: Solve for x
    x = 191,387,629.84/18,676.38
  6. Step 6: Final answer
    x = 10,247.58

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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.