Home / 20,814.36-31,233.84-7,675.96

Finding the Fourth Proportional to 20,814.36, 31,233.84 and 7,675.96

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Solution

The fourth proportional to 20,814.36, 31,233.84 and 7,675.96 is: 11,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.36 : 31,233.84 = 7,675.96 : x
  2. Step 2: Convert to fraction form
    20,814.36/31,233.84 = 7,675.96/x
  3. Step 3: Cross multiply
    20,814.36x = 31,233.84 × 7,675.96
  4. Step 4: Simplify right side
    20,814.36x = 239,749,628.40
  5. Step 5: Solve for x
    x = 239,749,628.40/20,814.36
  6. Step 6: Final answer
    x = 11,518.47

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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.