Home / 20,709.09-31,060.60-7,558.34

Finding the Fourth Proportional to 20,709.09, 31,060.60 and 7,558.34

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Solution

The fourth proportional to 20,709.09, 31,060.60 and 7,558.34 is: 11,336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.09 : 31,060.60 = 7,558.34 : x
  2. Step 2: Convert to fraction form
    20,709.09/31,060.60 = 7,558.34/x
  3. Step 3: Cross multiply
    20,709.09x = 31,060.60 × 7,558.34
  4. Step 4: Simplify right side
    20,709.09x = 234,766,401.21
  5. Step 5: Solve for x
    x = 234,766,401.21/20,709.09
  6. Step 6: Final answer
    x = 11,336.39

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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.