Home / 20,881.94-28,818.79-11,932.25

Finding the Fourth Proportional to 20,881.94, 28,818.79 and 11,932.25

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Solution

The fourth proportional to 20,881.94, 28,818.79 and 11,932.25 is: 16,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.94 : 28,818.79 = 11,932.25 : x
  2. Step 2: Convert to fraction form
    20,881.94/28,818.79 = 11,932.25/x
  3. Step 3: Cross multiply
    20,881.94x = 28,818.79 × 11,932.25
  4. Step 4: Simplify right side
    20,881.94x = 343,872,833.05
  5. Step 5: Solve for x
    x = 343,872,833.05/20,881.94
  6. Step 6: Final answer
    x = 16,467.48

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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.