Home / 20,679.32-28,537.44-11,247.96

Finding the Fourth Proportional to 20,679.32, 28,537.44 and 11,247.96

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Solution

The fourth proportional to 20,679.32, 28,537.44 and 11,247.96 is: 15,522.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.32 : 28,537.44 = 11,247.96 : x
  2. Step 2: Convert to fraction form
    20,679.32/28,537.44 = 11,247.96/x
  3. Step 3: Cross multiply
    20,679.32x = 28,537.44 × 11,247.96
  4. Step 4: Simplify right side
    20,679.32x = 320,987,983.62
  5. Step 5: Solve for x
    x = 320,987,983.62/20,679.32
  6. Step 6: Final answer
    x = 15,522.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.