Home / 20,886.77-28,825.26-11,934.08

Finding the Fourth Proportional to 20,886.77, 28,825.26 and 11,934.08

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Solution

The fourth proportional to 20,886.77, 28,825.26 and 11,934.08 is: 16,469.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.77 : 28,825.26 = 11,934.08 : x
  2. Step 2: Convert to fraction form
    20,886.77/28,825.26 = 11,934.08/x
  3. Step 3: Cross multiply
    20,886.77x = 28,825.26 × 11,934.08
  4. Step 4: Simplify right side
    20,886.77x = 344,002,814.73
  5. Step 5: Solve for x
    x = 344,002,814.73/20,886.77
  6. Step 6: Final answer
    x = 16,469.89

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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.