Home / 20,203.69-27,881.37-11,251.42

Finding the Fourth Proportional to 20,203.69, 27,881.37 and 11,251.42

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Solution

The fourth proportional to 20,203.69, 27,881.37 and 11,251.42 is: 15,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.69 : 27,881.37 = 11,251.42 : x
  2. Step 2: Convert to fraction form
    20,203.69/27,881.37 = 11,251.42/x
  3. Step 3: Cross multiply
    20,203.69x = 27,881.37 × 11,251.42
  4. Step 4: Simplify right side
    20,203.69x = 313,704,996.94
  5. Step 5: Solve for x
    x = 313,704,996.94/20,203.69
  6. Step 6: Final answer
    x = 15,527.11

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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.