Home / 20,090.36-30,132.11-5,299.43

Finding the Fourth Proportional to 20,090.36, 30,132.11 and 5,299.43

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Solution

The fourth proportional to 20,090.36, 30,132.11 and 5,299.43 is: 7,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.36 : 30,132.11 = 5,299.43 : x
  2. Step 2: Convert to fraction form
    20,090.36/30,132.11 = 5,299.43/x
  3. Step 3: Cross multiply
    20,090.36x = 30,132.11 × 5,299.43
  4. Step 4: Simplify right side
    20,090.36x = 159,682,830.54
  5. Step 5: Solve for x
    x = 159,682,830.54/20,090.36
  6. Step 6: Final answer
    x = 7,948.23

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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.