Home / 65,645.38-98,469.21-20,665.63

Finding the Fourth Proportional to 65,645.38, 98,469.21 and 20,665.63

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Solution

The fourth proportional to 65,645.38, 98,469.21 and 20,665.63 is: 30,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,645.38 : 98,469.21 = 20,665.63 : x
  2. Step 2: Convert to fraction form
    65,645.38/98,469.21 = 20,665.63/x
  3. Step 3: Cross multiply
    65,645.38x = 98,469.21 × 20,665.63
  4. Step 4: Simplify right side
    65,645.38x = 2,034,928,260.25
  5. Step 5: Solve for x
    x = 2,034,928,260.25/65,645.38
  6. Step 6: Final answer
    x = 30,998.80

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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.