Home / 20,886.86-28,825.97-11,935.68

Finding the Fourth Proportional to 20,886.86, 28,825.97 and 11,935.68

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Solution

The fourth proportional to 20,886.86, 28,825.97 and 11,935.68 is: 16,472.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.86 : 28,825.97 = 11,935.68 : x
  2. Step 2: Convert to fraction form
    20,886.86/28,825.97 = 11,935.68/x
  3. Step 3: Cross multiply
    20,886.86x = 28,825.97 × 11,935.68
  4. Step 4: Simplify right side
    20,886.86x = 344,057,493.93
  5. Step 5: Solve for x
    x = 344,057,493.93/20,886.86
  6. Step 6: Final answer
    x = 16,472.44

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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.