Home / 13,932.30-20,878.61-6,905.38

Finding the Fourth Proportional to 13,932.30, 20,878.61 and 6,905.38

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Solution

The fourth proportional to 13,932.30, 20,878.61 and 6,905.38 is: 10,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.30 : 20,878.61 = 6,905.38 : x
  2. Step 2: Convert to fraction form
    13,932.30/20,878.61 = 6,905.38/x
  3. Step 3: Cross multiply
    13,932.30x = 20,878.61 × 6,905.38
  4. Step 4: Simplify right side
    13,932.30x = 144,174,735.92
  5. Step 5: Solve for x
    x = 144,174,735.92/13,932.30
  6. Step 6: Final answer
    x = 10,348.24

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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.