Home / 20,761.32-31,145.94-11,396.28

Finding the Fourth Proportional to 20,761.32, 31,145.94 and 11,396.28

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Solution

The fourth proportional to 20,761.32, 31,145.94 and 11,396.28 is: 17,096.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.32 : 31,145.94 = 11,396.28 : x
  2. Step 2: Convert to fraction form
    20,761.32/31,145.94 = 11,396.28/x
  3. Step 3: Cross multiply
    20,761.32x = 31,145.94 × 11,396.28
  4. Step 4: Simplify right side
    20,761.32x = 354,947,853.10
  5. Step 5: Solve for x
    x = 354,947,853.10/20,761.32
  6. Step 6: Final answer
    x = 17,096.59

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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.