Home / 20,735.40-31,083.84-7,584.76

Finding the Fourth Proportional to 20,735.40, 31,083.84 and 7,584.76

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Solution

The fourth proportional to 20,735.40, 31,083.84 and 7,584.76 is: 11,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.40 : 31,083.84 = 7,584.76 : x
  2. Step 2: Convert to fraction form
    20,735.40/31,083.84 = 7,584.76/x
  3. Step 3: Cross multiply
    20,735.40x = 31,083.84 × 7,584.76
  4. Step 4: Simplify right side
    20,735.40x = 235,763,466.28
  5. Step 5: Solve for x
    x = 235,763,466.28/20,735.40
  6. Step 6: Final answer
    x = 11,370.09

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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.