Home / 20,735.20-31,093.68-7,584.16

Finding the Fourth Proportional to 20,735.20, 31,093.68 and 7,584.16

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Solution

The fourth proportional to 20,735.20, 31,093.68 and 7,584.16 is: 11,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.20 : 31,093.68 = 7,584.16 : x
  2. Step 2: Convert to fraction form
    20,735.20/31,093.68 = 7,584.16/x
  3. Step 3: Cross multiply
    20,735.20x = 31,093.68 × 7,584.16
  4. Step 4: Simplify right side
    20,735.20x = 235,819,444.11
  5. Step 5: Solve for x
    x = 235,819,444.11/20,735.20
  6. Step 6: Final answer
    x = 11,372.90

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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.