Home / 20,327.97-28,048.91-11,712.81

Finding the Fourth Proportional to 20,327.97, 28,048.91 and 11,712.81

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Solution

The fourth proportional to 20,327.97, 28,048.91 and 11,712.81 is: 16,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,327.97 : 28,048.91 = 11,712.81 : x
  2. Step 2: Convert to fraction form
    20,327.97/28,048.91 = 11,712.81/x
  3. Step 3: Cross multiply
    20,327.97x = 28,048.91 × 11,712.81
  4. Step 4: Simplify right side
    20,327.97x = 328,531,553.54
  5. Step 5: Solve for x
    x = 328,531,553.54/20,327.97
  6. Step 6: Final answer
    x = 16,161.55

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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.