Home / 20,398.14-28,149.66-11,324.12

Finding the Fourth Proportional to 20,398.14, 28,149.66 and 11,324.12

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Solution

The fourth proportional to 20,398.14, 28,149.66 and 11,324.12 is: 15,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.14 : 28,149.66 = 11,324.12 : x
  2. Step 2: Convert to fraction form
    20,398.14/28,149.66 = 11,324.12/x
  3. Step 3: Cross multiply
    20,398.14x = 28,149.66 × 11,324.12
  4. Step 4: Simplify right side
    20,398.14x = 318,769,987.05
  5. Step 5: Solve for x
    x = 318,769,987.05/20,398.14
  6. Step 6: Final answer
    x = 15,627.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.