Home / 20,550.25-28,359.55-11,119.02

Finding the Fourth Proportional to 20,550.25, 28,359.55 and 11,119.02

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Solution

The fourth proportional to 20,550.25, 28,359.55 and 11,119.02 is: 15,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.25 : 28,359.55 = 11,119.02 : x
  2. Step 2: Convert to fraction form
    20,550.25/28,359.55 = 11,119.02/x
  3. Step 3: Cross multiply
    20,550.25x = 28,359.55 × 11,119.02
  4. Step 4: Simplify right side
    20,550.25x = 315,330,403.64
  5. Step 5: Solve for x
    x = 315,330,403.64/20,550.25
  6. Step 6: Final answer
    x = 15,344.36

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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.