Home / 20,090.36-30,132.12-5,299.42

Finding the Fourth Proportional to 20,090.36, 30,132.12 and 5,299.42

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Solution

The fourth proportional to 20,090.36, 30,132.12 and 5,299.42 is: 7,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.36 : 30,132.12 = 5,299.42 : x
  2. Step 2: Convert to fraction form
    20,090.36/30,132.12 = 5,299.42/x
  3. Step 3: Cross multiply
    20,090.36x = 30,132.12 × 5,299.42
  4. Step 4: Simplify right side
    20,090.36x = 159,682,759.37
  5. Step 5: Solve for x
    x = 159,682,759.37/20,090.36
  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.