Home / 20,550.77-28,360.24-11,119.52

Finding the Fourth Proportional to 20,550.77, 28,360.24 and 11,119.52

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Solution

The fourth proportional to 20,550.77, 28,360.24 and 11,119.52 is: 15,345.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.77 : 28,360.24 = 11,119.52 : x
  2. Step 2: Convert to fraction form
    20,550.77/28,360.24 = 11,119.52/x
  3. Step 3: Cross multiply
    20,550.77x = 28,360.24 × 11,119.52
  4. Step 4: Simplify right side
    20,550.77x = 315,352,086.28
  5. Step 5: Solve for x
    x = 315,352,086.28/20,550.77
  6. Step 6: Final answer
    x = 15,345.03

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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.