Home / 20,712.21-31,063.64-6,669.54

Finding the Fourth Proportional to 20,712.21, 31,063.64 and 6,669.54

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Solution

The fourth proportional to 20,712.21, 31,063.64 and 6,669.54 is: 10,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.21 : 31,063.64 = 6,669.54 : x
  2. Step 2: Convert to fraction form
    20,712.21/31,063.64 = 6,669.54/x
  3. Step 3: Cross multiply
    20,712.21x = 31,063.64 × 6,669.54
  4. Step 4: Simplify right side
    20,712.21x = 207,180,156.18
  5. Step 5: Solve for x
    x = 207,180,156.18/20,712.21
  6. Step 6: Final answer
    x = 10,002.80

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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.