Home / 20,139.67-30,210.99-5,348.26

Finding the Fourth Proportional to 20,139.67, 30,210.99 and 5,348.26

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Solution

The fourth proportional to 20,139.67, 30,210.99 and 5,348.26 is: 8,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.67 : 30,210.99 = 5,348.26 : x
  2. Step 2: Convert to fraction form
    20,139.67/30,210.99 = 5,348.26/x
  3. Step 3: Cross multiply
    20,139.67x = 30,210.99 × 5,348.26
  4. Step 4: Simplify right side
    20,139.67x = 161,576,229.38
  5. Step 5: Solve for x
    x = 161,576,229.38/20,139.67
  6. Step 6: Final answer
    x = 8,022.78

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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.