Home / 20,665.13-30,997.69-5,082.75

Finding the Fourth Proportional to 20,665.13, 30,997.69 and 5,082.75

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Solution

The fourth proportional to 20,665.13, 30,997.69 and 5,082.75 is: 7,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.13 : 30,997.69 = 5,082.75 : x
  2. Step 2: Convert to fraction form
    20,665.13/30,997.69 = 5,082.75/x
  3. Step 3: Cross multiply
    20,665.13x = 30,997.69 × 5,082.75
  4. Step 4: Simplify right side
    20,665.13x = 157,553,496.14
  5. Step 5: Solve for x
    x = 157,553,496.14/20,665.13
  6. Step 6: Final answer
    x = 7,624.13

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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.