Home / 20,550.43-28,359.57-11,119

Finding the Fourth Proportional to 20,550.43, 28,359.57 and 11,119

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Solution

The fourth proportional to 20,550.43, 28,359.57 and 11,119 is: 15,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.43 : 28,359.57 = 11,119 : x
  2. Step 2: Convert to fraction form
    20,550.43/28,359.57 = 11,119/x
  3. Step 3: Cross multiply
    20,550.43x = 28,359.57 × 11,119
  4. Step 4: Simplify right side
    20,550.43x = 315,330,058.83
  5. Step 5: Solve for x
    x = 315,330,058.83/20,550.43
  6. Step 6: Final answer
    x = 15,344.21

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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.