Home / 20,676.25-30,989.67-7,513.21

Finding the Fourth Proportional to 20,676.25, 30,989.67 and 7,513.21

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Solution

The fourth proportional to 20,676.25, 30,989.67 and 7,513.21 is: 11,260.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.25 : 30,989.67 = 7,513.21 : x
  2. Step 2: Convert to fraction form
    20,676.25/30,989.67 = 7,513.21/x
  3. Step 3: Cross multiply
    20,676.25x = 30,989.67 × 7,513.21
  4. Step 4: Simplify right side
    20,676.25x = 232,831,898.54
  5. Step 5: Solve for x
    x = 232,831,898.54/20,676.25
  6. Step 6: Final answer
    x = 11,260.84

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1.5x scale

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.